21111090

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1$

素因数の和:97

約数の個数: 256

約数和(自身を含む): 73543680

約数和(自身を除く): 52432590

約数列:

[1, 2, 3, 5, 6, 7, 10, 11, 13, 14, 15, 19, 21, 22, 26, 30, 33, 35, 37, 38, 39, 42, 55, 57, 65, 66, 70, 74, 77, 78, 91, 95, 105, 110, 111, 114, 130, 133, 143, 154, 165, 182, 185, 190, 195, 209, 210, 222, 231, 247, 259, 266, 273, 285, 286, 330, 370, 385, 390, 399, 407, 418, 429, 455, 462, 481, 494, 518, 546, 555, 570, 627, 665, 703, 715, 741, 770, 777, 798, 814, 858, 910, 962, 1001, 1045, 1110, 1155, 1221, 1235, 1254, 1295, 1330, 1365, 1406, 1430, 1443, 1463, 1482, 1554, 1729, 1995, 2002, 2035, 2090, 2109, 2145, 2310, 2405, 2442, 2470, 2590, 2717, 2730, 2849, 2886, 2926, 3003, 3135, 3367, 3458, 3515, 3705, 3885, 3990, 4070, 4218, 4290, 4389, 4810, 4921, 5005, 5187, 5291, 5434, 5698, 6006, 6105, 6270, 6734, 7030, 7215, 7315, 7410, 7733, 7770, 8151, 8547, 8645, 8778, 9139, 9842, 10010, 10101, 10374, 10545, 10582, 12210, 13585, 14245, 14430, 14630, 14763, 15015, 15466, 15873, 16302, 16835, 17094, 17290, 18278, 19019, 20202, 21090, 21945, 23199, 24605, 25935, 26455, 27170, 27417, 28490, 29526, 30030, 31746, 33670, 37037, 38038, 38665, 40755, 42735, 43890, 45695, 46398, 49210, 50505, 51870, 52910, 54131, 54834, 57057, 63973, 73815, 74074, 77330, 79365, 81510, 85470, 91390, 95095, 100529, 101010, 108262, 111111, 114114, 115995, 127946, 137085, 147630, 158730, 162393, 185185, 190190, 191919, 201058, 222222, 231990, 270655, 274170, 285285, 301587, 319865, 324786, 370370, 383838, 502645, 541310, 555555, 570570, 603174, 639730, 703703, 811965, 959595, 1005290, 1111110, 1407406, 1507935, 1623930, 1919190, 2111109, 3015870, 3518515, 4222218, 7037030, 10555545, 21111090]

約数ペア:

[(1, 21111090), (2, 10555545), (3, 7037030), (5, 4222218), (6, 3518515), (7, 3015870), (10, 2111109), (11, 1919190), (13, 1623930), (14, 1507935), (15, 1407406), (19, 1111110), (21, 1005290), (22, 959595), (26, 811965), (30, 703703), (33, 639730), (35, 603174), (37, 570570), (38, 555555), (39, 541310), (42, 502645), (55, 383838), (57, 370370), (65, 324786), (66, 319865), (70, 301587), (74, 285285), (77, 274170), (78, 270655), (91, 231990), (95, 222222), (105, 201058), (110, 191919), (111, 190190), (114, 185185), (130, 162393), (133, 158730), (143, 147630), (154, 137085), (165, 127946), (182, 115995), (185, 114114), (190, 111111), (195, 108262), (209, 101010), (210, 100529), (222, 95095), (231, 91390), (247, 85470), (259, 81510), (266, 79365), (273, 77330), (285, 74074), (286, 73815), (330, 63973), (370, 57057), (385, 54834), (390, 54131), (399, 52910), (407, 51870), (418, 50505), (429, 49210), (455, 46398), (462, 45695), (481, 43890), (494, 42735), (518, 40755), (546, 38665), (555, 38038), (570, 37037), (627, 33670), (665, 31746), (703, 30030), (715, 29526), (741, 28490), (770, 27417), (777, 27170), (798, 26455), (814, 25935), (858, 24605), (910, 23199), (962, 21945), (1001, 21090), (1045, 20202), (1110, 19019), (1155, 18278), (1221, 17290), (1235, 17094), (1254, 16835), (1295, 16302), (1330, 15873), (1365, 15466), (1406, 15015), (1430, 14763), (1443, 14630), (1463, 14430), (1482, 14245), (1554, 13585), (1729, 12210), (1995, 10582), (2002, 10545), (2035, 10374), (2090, 10101), (2109, 10010), (2145, 9842), (2310, 9139), (2405, 8778), (2442, 8645), (2470, 8547), (2590, 8151), (2717, 7770), (2730, 7733), (2849, 7410), (2886, 7315), (2926, 7215), (3003, 7030), (3135, 6734), (3367, 6270), (3458, 6105), (3515, 6006), (3705, 5698), (3885, 5434), (3990, 5291), (4070, 5187), (4218, 5005), (4290, 4921), (4389, 4810)]