21339780

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{149}}^1$

素因数の和:210

約数の個数: 192

約数和(自身を含む): 77414400

約数和(自身を除く): 56074620

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 11, 12, 14, 15, 20, 21, 22, 28, 30, 31, 33, 35, 42, 44, 55, 60, 62, 66, 70, 77, 84, 93, 105, 110, 124, 132, 140, 149, 154, 155, 165, 186, 210, 217, 220, 231, 298, 308, 310, 330, 341, 372, 385, 420, 434, 447, 462, 465, 596, 620, 651, 660, 682, 745, 770, 868, 894, 924, 930, 1023, 1043, 1085, 1155, 1302, 1364, 1490, 1540, 1639, 1705, 1788, 1860, 2046, 2086, 2170, 2235, 2310, 2387, 2604, 2980, 3129, 3255, 3278, 3410, 4092, 4172, 4340, 4470, 4619, 4620, 4774, 4917, 5115, 5215, 6258, 6510, 6556, 6820, 7161, 8195, 8940, 9238, 9548, 9834, 10230, 10430, 11473, 11935, 12516, 13020, 13857, 14322, 15645, 16390, 18476, 19668, 20460, 20860, 22946, 23095, 23870, 24585, 27714, 28644, 31290, 32333, 32780, 34419, 35805, 45892, 46190, 47740, 49170, 50809, 55428, 57365, 62580, 64666, 68838, 69285, 71610, 92380, 96999, 98340, 101618, 114730, 129332, 137676, 138570, 143220, 152427, 161665, 172095, 193998, 203236, 229460, 254045, 277140, 304854, 323330, 344190, 355663, 387996, 484995, 508090, 609708, 646660, 688380, 711326, 762135, 969990, 1016180, 1066989, 1422652, 1524270, 1778315, 1939980, 2133978, 3048540, 3556630, 4267956, 5334945, 7113260, 10669890, 21339780]

約数ペア:

[(1, 21339780), (2, 10669890), (3, 7113260), (4, 5334945), (5, 4267956), (6, 3556630), (7, 3048540), (10, 2133978), (11, 1939980), (12, 1778315), (14, 1524270), (15, 1422652), (20, 1066989), (21, 1016180), (22, 969990), (28, 762135), (30, 711326), (31, 688380), (33, 646660), (35, 609708), (42, 508090), (44, 484995), (55, 387996), (60, 355663), (62, 344190), (66, 323330), (70, 304854), (77, 277140), (84, 254045), (93, 229460), (105, 203236), (110, 193998), (124, 172095), (132, 161665), (140, 152427), (149, 143220), (154, 138570), (155, 137676), (165, 129332), (186, 114730), (210, 101618), (217, 98340), (220, 96999), (231, 92380), (298, 71610), (308, 69285), (310, 68838), (330, 64666), (341, 62580), (372, 57365), (385, 55428), (420, 50809), (434, 49170), (447, 47740), (462, 46190), (465, 45892), (596, 35805), (620, 34419), (651, 32780), (660, 32333), (682, 31290), (745, 28644), (770, 27714), (868, 24585), (894, 23870), (924, 23095), (930, 22946), (1023, 20860), (1043, 20460), (1085, 19668), (1155, 18476), (1302, 16390), (1364, 15645), (1490, 14322), (1540, 13857), (1639, 13020), (1705, 12516), (1788, 11935), (1860, 11473), (2046, 10430), (2086, 10230), (2170, 9834), (2235, 9548), (2310, 9238), (2387, 8940), (2604, 8195), (2980, 7161), (3129, 6820), (3255, 6556), (3278, 6510), (3410, 6258), (4092, 5215), (4172, 5115), (4340, 4917), (4470, 4774), (4619, 4620)]