21551460

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{23}}^2\times {\mathrm{97}}^1$

素因数の和:162

約数の個数: 144

約数和(自身を含む): 72836736

約数和(自身を除く): 51285276

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 23, 28, 30, 35, 42, 46, 60, 69, 70, 84, 92, 97, 105, 115, 138, 140, 161, 194, 210, 230, 276, 291, 322, 345, 388, 420, 460, 483, 485, 529, 582, 644, 679, 690, 805, 966, 970, 1058, 1164, 1358, 1380, 1455, 1587, 1610, 1932, 1940, 2037, 2116, 2231, 2415, 2645, 2716, 2910, 3174, 3220, 3395, 3703, 4074, 4462, 4830, 5290, 5820, 6348, 6693, 6790, 7406, 7935, 8148, 8924, 9660, 10185, 10580, 11109, 11155, 13386, 13580, 14812, 15617, 15870, 18515, 20370, 22218, 22310, 26772, 31234, 31740, 33465, 37030, 40740, 44436, 44620, 46851, 51313, 55545, 62468, 66930, 74060, 78085, 93702, 102626, 111090, 133860, 153939, 156170, 187404, 205252, 222180, 234255, 256565, 307878, 312340, 359191, 468510, 513130, 615756, 718382, 769695, 937020, 1026260, 1077573, 1436764, 1539390, 1795955, 2155146, 3078780, 3591910, 4310292, 5387865, 7183820, 10775730, 21551460]

約数ペア:

[(1, 21551460), (2, 10775730), (3, 7183820), (4, 5387865), (5, 4310292), (6, 3591910), (7, 3078780), (10, 2155146), (12, 1795955), (14, 1539390), (15, 1436764), (20, 1077573), (21, 1026260), (23, 937020), (28, 769695), (30, 718382), (35, 615756), (42, 513130), (46, 468510), (60, 359191), (69, 312340), (70, 307878), (84, 256565), (92, 234255), (97, 222180), (105, 205252), (115, 187404), (138, 156170), (140, 153939), (161, 133860), (194, 111090), (210, 102626), (230, 93702), (276, 78085), (291, 74060), (322, 66930), (345, 62468), (388, 55545), (420, 51313), (460, 46851), (483, 44620), (485, 44436), (529, 40740), (582, 37030), (644, 33465), (679, 31740), (690, 31234), (805, 26772), (966, 22310), (970, 22218), (1058, 20370), (1164, 18515), (1358, 15870), (1380, 15617), (1455, 14812), (1587, 13580), (1610, 13386), (1932, 11155), (1940, 11109), (2037, 10580), (2116, 10185), (2231, 9660), (2415, 8924), (2645, 8148), (2716, 7935), (2910, 7406), (3174, 6790), (3220, 6693), (3395, 6348), (3703, 5820), (4074, 5290), (4462, 4830)]