21285465740

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{10559}}^1$

素因数の和:10621

約数の個数: 216

約数和(自身を含む): 60521852160

約数和(自身を除く): 39236386420

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 17, 20, 22, 28, 34, 35, 44, 49, 55, 68, 70, 77, 85, 98, 110, 119, 121, 140, 154, 170, 187, 196, 220, 238, 242, 245, 308, 340, 374, 385, 476, 484, 490, 539, 595, 605, 748, 770, 833, 847, 935, 980, 1078, 1190, 1210, 1309, 1540, 1666, 1694, 1870, 2057, 2156, 2380, 2420, 2618, 2695, 3332, 3388, 3740, 4114, 4165, 4235, 5236, 5390, 5929, 6545, 8228, 8330, 8470, 9163, 10285, 10559, 10780, 11858, 13090, 14399, 16660, 16940, 18326, 20570, 21118, 23716, 26180, 28798, 29645, 36652, 41140, 42236, 45815, 52795, 57596, 59290, 71995, 73913, 91630, 100793, 105590, 116149, 118580, 143990, 147826, 179503, 183260, 201586, 211180, 232298, 287980, 295652, 359006, 369565, 403172, 464596, 503965, 517391, 580745, 718012, 739130, 813043, 897515, 1007930, 1034782, 1161490, 1256521, 1277639, 1478260, 1626086, 1795030, 1974533, 2015860, 2069564, 2322980, 2513042, 2555278, 2586955, 3252172, 3590060, 3949066, 4065215, 5026084, 5110556, 5173910, 5691301, 6282605, 6388195, 7898132, 8130430, 8795647, 8943473, 9872665, 10347820, 11382602, 12565210, 12776390, 13821731, 16260860, 17591294, 17886946, 19745330, 21719863, 22765204, 25130420, 25552780, 27643462, 28456505, 35182588, 35773892, 39490660, 43439726, 43978235, 44717365, 55286924, 56913010, 62604311, 69108655, 86879452, 87956470, 89434730, 96752117, 108599315, 113826020, 125208622, 138217310, 152039041, 175912940, 178869460, 193504234, 217198630, 250417244, 276434620, 304078082, 313021555, 387008468, 434397260, 483760585, 608156164, 626043110, 760195205, 967521170, 1064273287, 1252086220, 1520390410, 1935042340, 2128546574, 3040780820, 4257093148, 5321366435, 10642732870, 21285465740]

約数ペア:

[(1, 21285465740), (2, 10642732870), (4, 5321366435), (5, 4257093148), (7, 3040780820), (10, 2128546574), (11, 1935042340), (14, 1520390410), (17, 1252086220), (20, 1064273287), (22, 967521170), (28, 760195205), (34, 626043110), (35, 608156164), (44, 483760585), (49, 434397260), (55, 387008468), (68, 313021555), (70, 304078082), (77, 276434620), (85, 250417244), (98, 217198630), (110, 193504234), (119, 178869460), (121, 175912940), (140, 152039041), (154, 138217310), (170, 125208622), (187, 113826020), (196, 108599315), (220, 96752117), (238, 89434730), (242, 87956470), (245, 86879452), (308, 69108655), (340, 62604311), (374, 56913010), (385, 55286924), (476, 44717365), (484, 43978235), (490, 43439726), (539, 39490660), (595, 35773892), (605, 35182588), (748, 28456505), (770, 27643462), (833, 25552780), (847, 25130420), (935, 22765204), (980, 21719863), (1078, 19745330), (1190, 17886946), (1210, 17591294), (1309, 16260860), (1540, 13821731), (1666, 12776390), (1694, 12565210), (1870, 11382602), (2057, 10347820), (2156, 9872665), (2380, 8943473), (2420, 8795647), (2618, 8130430), (2695, 7898132), (3332, 6388195), (3388, 6282605), (3740, 5691301), (4114, 5173910), (4165, 5110556), (4235, 5026084), (5236, 4065215), (5390, 3949066), (5929, 3590060), (6545, 3252172), (8228, 2586955), (8330, 2555278), (8470, 2513042), (9163, 2322980), (10285, 2069564), (10559, 2015860), (10780, 1974533), (11858, 1795030), (13090, 1626086), (14399, 1478260), (16660, 1277639), (16940, 1256521), (18326, 1161490), (20570, 1034782), (21118, 1007930), (23716, 897515), (26180, 813043), (28798, 739130), (29645, 718012), (36652, 580745), (41140, 517391), (42236, 503965), (45815, 464596), (52795, 403172), (57596, 369565), (59290, 359006), (71995, 295652), (73913, 287980), (91630, 232298), (100793, 211180), (105590, 201586), (116149, 183260), (118580, 179503), (143990, 147826)]