21530887294

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{90465913}}^1$

素因数の和:90465939

約数の個数: 16

約数和(自身を含む): 39081274848

約数和(自身を除く): 17550387554

約数列:

[1, 2, 7, 14, 17, 34, 119, 238, 90465913, 180931826, 633261391, 1266522782, 1537920521, 3075841042, 10765443647, 21530887294]

約数ペア:

[(1, 21530887294), (2, 10765443647), (7, 3075841042), (14, 1537920521), (17, 1266522782), (34, 633261391), (119, 180931826), (238, 90465913)]