21243660

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{29}}^2\times {\mathrm{421}}^1$

素因数の和:491

約数の個数: 72

約数和(自身を含む): 61750416

約数和(自身を除く): 40506756

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 29, 30, 58, 60, 87, 116, 145, 174, 290, 348, 421, 435, 580, 841, 842, 870, 1263, 1682, 1684, 1740, 2105, 2523, 2526, 3364, 4205, 4210, 5046, 5052, 6315, 8410, 8420, 10092, 12209, 12615, 12630, 16820, 24418, 25230, 25260, 36627, 48836, 50460, 61045, 73254, 122090, 146508, 183135, 244180, 354061, 366270, 708122, 732540, 1062183, 1416244, 1770305, 2124366, 3540610, 4248732, 5310915, 7081220, 10621830, 21243660]

約数ペア:

[(1, 21243660), (2, 10621830), (3, 7081220), (4, 5310915), (5, 4248732), (6, 3540610), (10, 2124366), (12, 1770305), (15, 1416244), (20, 1062183), (29, 732540), (30, 708122), (58, 366270), (60, 354061), (87, 244180), (116, 183135), (145, 146508), (174, 122090), (290, 73254), (348, 61045), (421, 50460), (435, 48836), (580, 36627), (841, 25260), (842, 25230), (870, 24418), (1263, 16820), (1682, 12630), (1684, 12615), (1740, 12209), (2105, 10092), (2523, 8420), (2526, 8410), (3364, 6315), (4205, 5052), (4210, 5046)]