21000891272

素因数分解:

$2^3\times {\mathrm{37}}^1\times {\mathrm{70948957}}^1$

素因数の和:70949000

約数の個数: 16

約数和(自身を含む): 40440906060

約数和(自身を除く): 19440014788

約数列:

[1, 2, 4, 8, 37, 74, 148, 296, 70948957, 141897914, 283795828, 567591656, 2625111409, 5250222818, 10500445636, 21000891272]

約数ペア:

[(1, 21000891272), (2, 10500445636), (4, 5250222818), (8, 2625111409), (37, 567591656), (74, 283795828), (148, 141897914), (296, 70948957)]