21312390

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{131}}^1$

素因数の和:198

約数の個数: 128

約数和(自身を含む): 61585920

約数和(自身を除く): 40273530

約数列:

[1, 2, 3, 5, 6, 10, 11, 15, 17, 22, 29, 30, 33, 34, 51, 55, 58, 66, 85, 87, 102, 110, 131, 145, 165, 170, 174, 187, 255, 262, 290, 319, 330, 374, 393, 435, 493, 510, 561, 638, 655, 786, 870, 935, 957, 986, 1122, 1310, 1441, 1479, 1595, 1870, 1914, 1965, 2227, 2465, 2805, 2882, 2958, 3190, 3799, 3930, 4323, 4454, 4785, 4930, 5423, 5610, 6681, 7205, 7395, 7598, 8646, 9570, 10846, 11135, 11397, 13362, 14410, 14790, 16269, 18995, 21615, 22270, 22794, 24497, 27115, 32538, 33405, 37990, 41789, 43230, 48994, 54230, 56985, 64583, 66810, 73491, 81345, 83578, 113970, 122485, 125367, 129166, 146982, 162690, 193749, 208945, 244970, 250734, 322915, 367455, 387498, 417890, 626835, 645830, 710413, 734910, 968745, 1253670, 1420826, 1937490, 2131239, 3552065, 4262478, 7104130, 10656195, 21312390]

約数ペア:

[(1, 21312390), (2, 10656195), (3, 7104130), (5, 4262478), (6, 3552065), (10, 2131239), (11, 1937490), (15, 1420826), (17, 1253670), (22, 968745), (29, 734910), (30, 710413), (33, 645830), (34, 626835), (51, 417890), (55, 387498), (58, 367455), (66, 322915), (85, 250734), (87, 244970), (102, 208945), (110, 193749), (131, 162690), (145, 146982), (165, 129166), (170, 125367), (174, 122485), (187, 113970), (255, 83578), (262, 81345), (290, 73491), (319, 66810), (330, 64583), (374, 56985), (393, 54230), (435, 48994), (493, 43230), (510, 41789), (561, 37990), (638, 33405), (655, 32538), (786, 27115), (870, 24497), (935, 22794), (957, 22270), (986, 21615), (1122, 18995), (1310, 16269), (1441, 14790), (1479, 14410), (1595, 13362), (1870, 11397), (1914, 11135), (1965, 10846), (2227, 9570), (2465, 8646), (2805, 7598), (2882, 7395), (2958, 7205), (3190, 6681), (3799, 5610), (3930, 5423), (4323, 4930), (4454, 4785)]