21476280

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{691}}^1$

素因数の和:749

約数の個数: 128

約数和(自身を含む): 75732480

約数和(自身を除く): 54256200

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 37, 40, 42, 56, 60, 70, 74, 84, 105, 111, 120, 140, 148, 168, 185, 210, 222, 259, 280, 296, 370, 420, 444, 518, 555, 691, 740, 777, 840, 888, 1036, 1110, 1295, 1382, 1480, 1554, 2072, 2073, 2220, 2590, 2764, 3108, 3455, 3885, 4146, 4440, 4837, 5180, 5528, 6216, 6910, 7770, 8292, 9674, 10360, 10365, 13820, 14511, 15540, 16584, 19348, 20730, 24185, 25567, 27640, 29022, 31080, 38696, 41460, 48370, 51134, 58044, 72555, 76701, 82920, 96740, 102268, 116088, 127835, 145110, 153402, 178969, 193480, 204536, 255670, 290220, 306804, 357938, 383505, 511340, 536907, 580440, 613608, 715876, 767010, 894845, 1022680, 1073814, 1431752, 1534020, 1789690, 2147628, 2684535, 3068040, 3579380, 4295256, 5369070, 7158760, 10738140, 21476280]

約数ペア:

[(1, 21476280), (2, 10738140), (3, 7158760), (4, 5369070), (5, 4295256), (6, 3579380), (7, 3068040), (8, 2684535), (10, 2147628), (12, 1789690), (14, 1534020), (15, 1431752), (20, 1073814), (21, 1022680), (24, 894845), (28, 767010), (30, 715876), (35, 613608), (37, 580440), (40, 536907), (42, 511340), (56, 383505), (60, 357938), (70, 306804), (74, 290220), (84, 255670), (105, 204536), (111, 193480), (120, 178969), (140, 153402), (148, 145110), (168, 127835), (185, 116088), (210, 102268), (222, 96740), (259, 82920), (280, 76701), (296, 72555), (370, 58044), (420, 51134), (444, 48370), (518, 41460), (555, 38696), (691, 31080), (740, 29022), (777, 27640), (840, 25567), (888, 24185), (1036, 20730), (1110, 19348), (1295, 16584), (1382, 15540), (1480, 14511), (1554, 13820), (2072, 10365), (2073, 10360), (2220, 9674), (2590, 8292), (2764, 7770), (3108, 6910), (3455, 6216), (3885, 5528), (4146, 5180), (4440, 4837)]