21965580

素因数分解:

$2^2\times 3^4\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{149}}^1$

素因数の和:190

約数の個数: 240

約数和(自身を含む): 85377600

約数和(自身を除く): 63412020

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 13, 14, 15, 18, 20, 21, 26, 27, 28, 30, 35, 36, 39, 42, 45, 52, 54, 60, 63, 65, 70, 78, 81, 84, 90, 91, 105, 108, 117, 126, 130, 135, 140, 149, 156, 162, 180, 182, 189, 195, 210, 234, 252, 260, 270, 273, 298, 315, 324, 351, 364, 378, 390, 405, 420, 447, 455, 468, 540, 546, 567, 585, 596, 630, 702, 745, 756, 780, 810, 819, 894, 910, 945, 1043, 1053, 1092, 1134, 1170, 1260, 1341, 1365, 1404, 1490, 1620, 1638, 1755, 1788, 1820, 1890, 1937, 2086, 2106, 2235, 2268, 2340, 2457, 2682, 2730, 2835, 2980, 3129, 3276, 3510, 3780, 3874, 4023, 4095, 4172, 4212, 4470, 4914, 5215, 5265, 5364, 5460, 5670, 5811, 6258, 6705, 7020, 7371, 7748, 8046, 8190, 8940, 9387, 9685, 9828, 10430, 10530, 11340, 11622, 12069, 12285, 12516, 13410, 13559, 14742, 15645, 16092, 16380, 17433, 18774, 19370, 20115, 20860, 21060, 23244, 24138, 24570, 26820, 27118, 28161, 29055, 29484, 31290, 34866, 36855, 37548, 38740, 40230, 40677, 46935, 48276, 49140, 52299, 54236, 56322, 58110, 60345, 62580, 67795, 69732, 73710, 80460, 81354, 84483, 87165, 93870, 104598, 112644, 116220, 120690, 122031, 135590, 140805, 147420, 156897, 162708, 168966, 174330, 187740, 203385, 209196, 241380, 244062, 261495, 271180, 281610, 313794, 337932, 348660, 366093, 406770, 422415, 488124, 522990, 563220, 610155, 627588, 732186, 784485, 813540, 844830, 1045980, 1098279, 1220310, 1464372, 1568970, 1689660, 1830465, 2196558, 2440620, 3137940, 3660930, 4393116, 5491395, 7321860, 10982790, 21965580]

約数ペア:

[(1, 21965580), (2, 10982790), (3, 7321860), (4, 5491395), (5, 4393116), (6, 3660930), (7, 3137940), (9, 2440620), (10, 2196558), (12, 1830465), (13, 1689660), (14, 1568970), (15, 1464372), (18, 1220310), (20, 1098279), (21, 1045980), (26, 844830), (27, 813540), (28, 784485), (30, 732186), (35, 627588), (36, 610155), (39, 563220), (42, 522990), (45, 488124), (52, 422415), (54, 406770), (60, 366093), (63, 348660), (65, 337932), (70, 313794), (78, 281610), (81, 271180), (84, 261495), (90, 244062), (91, 241380), (105, 209196), (108, 203385), (117, 187740), (126, 174330), (130, 168966), (135, 162708), (140, 156897), (149, 147420), (156, 140805), (162, 135590), (180, 122031), (182, 120690), (189, 116220), (195, 112644), (210, 104598), (234, 93870), (252, 87165), (260, 84483), (270, 81354), (273, 80460), (298, 73710), (315, 69732), (324, 67795), (351, 62580), (364, 60345), (378, 58110), (390, 56322), (405, 54236), (420, 52299), (447, 49140), (455, 48276), (468, 46935), (540, 40677), (546, 40230), (567, 38740), (585, 37548), (596, 36855), (630, 34866), (702, 31290), (745, 29484), (756, 29055), (780, 28161), (810, 27118), (819, 26820), (894, 24570), (910, 24138), (945, 23244), (1043, 21060), (1053, 20860), (1092, 20115), (1134, 19370), (1170, 18774), (1260, 17433), (1341, 16380), (1365, 16092), (1404, 15645), (1490, 14742), (1620, 13559), (1638, 13410), (1755, 12516), (1788, 12285), (1820, 12069), (1890, 11622), (1937, 11340), (2086, 10530), (2106, 10430), (2235, 9828), (2268, 9685), (2340, 9387), (2457, 8940), (2682, 8190), (2730, 8046), (2835, 7748), (2980, 7371), (3129, 7020), (3276, 6705), (3510, 6258), (3780, 5811), (3874, 5670), (4023, 5460), (4095, 5364), (4172, 5265), (4212, 5215), (4470, 4914)]