21156912

素因数分解:

$2^4\times 3^2\times 7^1\times {\mathrm{139}}^1\times {\mathrm{151}}^1$

素因数の和:311

約数の個数: 120

約数和(自身を含む): 68606720

約数和(自身を除く): 47449808

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 28, 36, 42, 48, 56, 63, 72, 84, 112, 126, 139, 144, 151, 168, 252, 278, 302, 336, 417, 453, 504, 556, 604, 834, 906, 973, 1008, 1057, 1112, 1208, 1251, 1359, 1668, 1812, 1946, 2114, 2224, 2416, 2502, 2718, 2919, 3171, 3336, 3624, 3892, 4228, 5004, 5436, 5838, 6342, 6672, 7248, 7784, 8456, 8757, 9513, 10008, 10872, 11676, 12684, 15568, 16912, 17514, 19026, 20016, 20989, 21744, 23352, 25368, 35028, 38052, 41978, 46704, 50736, 62967, 70056, 76104, 83956, 125934, 140112, 146923, 152208, 167912, 188901, 251868, 293846, 335824, 377802, 440769, 503736, 587692, 755604, 881538, 1007472, 1175384, 1322307, 1511208, 1763076, 2350768, 2644614, 3022416, 3526152, 5289228, 7052304, 10578456, 21156912]

約数ペア:

[(1, 21156912), (2, 10578456), (3, 7052304), (4, 5289228), (6, 3526152), (7, 3022416), (8, 2644614), (9, 2350768), (12, 1763076), (14, 1511208), (16, 1322307), (18, 1175384), (21, 1007472), (24, 881538), (28, 755604), (36, 587692), (42, 503736), (48, 440769), (56, 377802), (63, 335824), (72, 293846), (84, 251868), (112, 188901), (126, 167912), (139, 152208), (144, 146923), (151, 140112), (168, 125934), (252, 83956), (278, 76104), (302, 70056), (336, 62967), (417, 50736), (453, 46704), (504, 41978), (556, 38052), (604, 35028), (834, 25368), (906, 23352), (973, 21744), (1008, 20989), (1057, 20016), (1112, 19026), (1208, 17514), (1251, 16912), (1359, 15568), (1668, 12684), (1812, 11676), (1946, 10872), (2114, 10008), (2224, 9513), (2416, 8757), (2502, 8456), (2718, 7784), (2919, 7248), (3171, 6672), (3336, 6342), (3624, 5838), (3892, 5436), (4228, 5004)]