21750010

素因数分解:

$2^1\times 5^1\times {\mathrm{331}}^1\times {\mathrm{6571}}^1$

素因数の和:6909

約数の個数: 16

約数和(自身を含む): 39274272

約数和(自身を除く): 17524262

約数列:

[1, 2, 5, 10, 331, 662, 1655, 3310, 6571, 13142, 32855, 65710, 2175001, 4350002, 10875005, 21750010]

約数ペア:

[(1, 21750010), (2, 10875005), (5, 4350002), (10, 2175001), (331, 65710), (662, 32855), (1655, 13142), (3310, 6571)]