21309968

素因数分解:

$2^4\times {\mathrm{163}}^1\times {\mathrm{8171}}^1$

素因数の和:8342

約数の個数: 20

約数和(自身を含む): 41546448

約数和(自身を除く): 20236480

約数列:

[1, 2, 4, 8, 16, 163, 326, 652, 1304, 2608, 8171, 16342, 32684, 65368, 130736, 1331873, 2663746, 5327492, 10654984, 21309968]

約数ペア:

[(1, 21309968), (2, 10654984), (4, 5327492), (8, 2663746), (16, 1331873), (163, 130736), (326, 65368), (652, 32684), (1304, 16342), (2608, 8171)]