86880020

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{48809}}^1$

素因数の和:48907

約数の個数: 24

約数和(自身を含む): 184501800

約数和(自身を除く): 97621780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 48809, 97618, 195236, 244045, 488090, 976180, 4344001, 8688002, 17376004, 21720005, 43440010, 86880020]

約数ペア:

[(1, 86880020), (2, 43440010), (4, 21720005), (5, 17376004), (10, 8688002), (20, 4344001), (89, 976180), (178, 488090), (356, 244045), (445, 195236), (890, 97618), (1780, 48809)]