21021656

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{154571}}^1$

素因数の和:154594

約数の個数: 16

約数和(自身を含む): 41734440

約数和(自身を除く): 20712784

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 154571, 309142, 618284, 1236568, 2627707, 5255414, 10510828, 21021656]

約数ペア:

[(1, 21021656), (2, 10510828), (4, 5255414), (8, 2627707), (17, 1236568), (34, 618284), (68, 309142), (136, 154571)]