21409986

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{5179}}^1$

素因数の和:5250

約数の個数: 32

約数和(自身を含む): 46992960

約数和(自身を除く): 25582974

約数列:

[1, 2, 3, 6, 13, 26, 39, 53, 78, 106, 159, 318, 689, 1378, 2067, 4134, 5179, 10358, 15537, 31074, 67327, 134654, 201981, 274487, 403962, 548974, 823461, 1646922, 3568331, 7136662, 10704993, 21409986]

約数ペア:

[(1, 21409986), (2, 10704993), (3, 7136662), (6, 3568331), (13, 1646922), (26, 823461), (39, 548974), (53, 403962), (78, 274487), (106, 201981), (159, 134654), (318, 67327), (689, 31074), (1378, 15537), (2067, 10358), (4134, 5179)]