21703240

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41737}}^1$

素因数の和:41761

約数の個数: 32

約数和(自身を含む): 52589880

約数和(自身を除く): 30886640

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 41737, 83474, 166948, 208685, 333896, 417370, 542581, 834740, 1085162, 1669480, 2170324, 2712905, 4340648, 5425810, 10851620, 21703240]

約数ペア:

[(1, 21703240), (2, 10851620), (4, 5425810), (5, 4340648), (8, 2712905), (10, 2170324), (13, 1669480), (20, 1085162), (26, 834740), (40, 542581), (52, 417370), (65, 333896), (104, 208685), (130, 166948), (260, 83474), (520, 41737)]