21885396

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{2647}}^1$

素因数の和:2720

約数の個数: 48

約数和(自身を含む): 56052864

約数和(自身を除く): 34167468

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 53, 78, 106, 156, 159, 212, 318, 636, 689, 1378, 2067, 2647, 2756, 4134, 5294, 7941, 8268, 10588, 15882, 31764, 34411, 68822, 103233, 137644, 140291, 206466, 280582, 412932, 420873, 561164, 841746, 1683492, 1823783, 3647566, 5471349, 7295132, 10942698, 21885396]

約数ペア:

[(1, 21885396), (2, 10942698), (3, 7295132), (4, 5471349), (6, 3647566), (12, 1823783), (13, 1683492), (26, 841746), (39, 561164), (52, 420873), (53, 412932), (78, 280582), (106, 206466), (156, 140291), (159, 137644), (212, 103233), (318, 68822), (636, 34411), (689, 31764), (1378, 15882), (2067, 10588), (2647, 8268), (2756, 7941), (4134, 5294)]