21718680

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{79}}^2$

素因数の和:201

約数の個数: 96

約数和(自身を含む): 68266800

約数和(自身を除く): 46548120

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 29, 30, 40, 58, 60, 79, 87, 116, 120, 145, 158, 174, 232, 237, 290, 316, 348, 395, 435, 474, 580, 632, 696, 790, 870, 948, 1160, 1185, 1580, 1740, 1896, 2291, 2370, 3160, 3480, 4582, 4740, 6241, 6873, 9164, 9480, 11455, 12482, 13746, 18328, 18723, 22910, 24964, 27492, 31205, 34365, 37446, 45820, 49928, 54984, 62410, 68730, 74892, 91640, 93615, 124820, 137460, 149784, 180989, 187230, 249640, 274920, 361978, 374460, 542967, 723956, 748920, 904945, 1085934, 1447912, 1809890, 2171868, 2714835, 3619780, 4343736, 5429670, 7239560, 10859340, 21718680]

約数ペア:

[(1, 21718680), (2, 10859340), (3, 7239560), (4, 5429670), (5, 4343736), (6, 3619780), (8, 2714835), (10, 2171868), (12, 1809890), (15, 1447912), (20, 1085934), (24, 904945), (29, 748920), (30, 723956), (40, 542967), (58, 374460), (60, 361978), (79, 274920), (87, 249640), (116, 187230), (120, 180989), (145, 149784), (158, 137460), (174, 124820), (232, 93615), (237, 91640), (290, 74892), (316, 68730), (348, 62410), (395, 54984), (435, 49928), (474, 45820), (580, 37446), (632, 34365), (696, 31205), (790, 27492), (870, 24964), (948, 22910), (1160, 18723), (1185, 18328), (1580, 13746), (1740, 12482), (1896, 11455), (2291, 9480), (2370, 9164), (3160, 6873), (3480, 6241), (4582, 4740)]