21693207

素因数分解:

$3^1\times {\mathrm{17}}^2\times {\mathrm{131}}^1\times {\mathrm{191}}^1$

素因数の和:359

約数の個数: 24

約数和(自身を含む): 31122432

約数和(自身を除く): 9429225

約数列:

[1, 3, 17, 51, 131, 191, 289, 393, 573, 867, 2227, 3247, 6681, 9741, 25021, 37859, 55199, 75063, 113577, 165597, 425357, 1276071, 7231069, 21693207]

約数ペア:

[(1, 21693207), (3, 7231069), (17, 1276071), (51, 425357), (131, 165597), (191, 113577), (289, 75063), (393, 55199), (573, 37859), (867, 25021), (2227, 9741), (3247, 6681)]