16980220

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{6481}}^1$

素因数の和:6621

約数の個数: 24

約数和(自身を含む): 35936208

約数和(自身を除く): 18955988

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 524, 655, 1310, 2620, 6481, 12962, 25924, 32405, 64810, 129620, 849011, 1698022, 3396044, 4245055, 8490110, 16980220]

約数ペア:

[(1, 16980220), (2, 8490110), (4, 4245055), (5, 3396044), (10, 1698022), (20, 849011), (131, 129620), (262, 64810), (524, 32405), (655, 25924), (1310, 12962), (2620, 6481)]