21638896

素因数分解:

$2^4\times {\mathrm{61}}^1\times {\mathrm{22171}}^1$

素因数の和:22240

約数の個数: 20

約数和(自身を含む): 42614584

約数和(自身を除く): 20975688

約数列:

[1, 2, 4, 8, 16, 61, 122, 244, 488, 976, 22171, 44342, 88684, 177368, 354736, 1352431, 2704862, 5409724, 10819448, 21638896]

約数ペア:

[(1, 21638896), (2, 10819448), (4, 5409724), (8, 2704862), (16, 1352431), (61, 354736), (122, 177368), (244, 88684), (488, 44342), (976, 22171)]