21002720

素因数分解:

$2^5\times 5^1\times {\mathrm{131267}}^1$

素因数の和:131282

約数の個数: 24

約数和(自身を含む): 49619304

約数和(自身を除く): 28616584

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 131267, 262534, 525068, 656335, 1050136, 1312670, 2100272, 2625340, 4200544, 5250680, 10501360, 21002720]

約数ペア:

[(1, 21002720), (2, 10501360), (4, 5250680), (5, 4200544), (8, 2625340), (10, 2100272), (16, 1312670), (20, 1050136), (32, 656335), (40, 525068), (80, 262534), (160, 131267)]