21157788430

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{124457579}}^1$

素因数の和:124457603

約数の個数: 16

約数和(自身を含む): 40324255920

約数和(自身を除く): 19166467490

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 124457579, 248915158, 622287895, 1244575790, 2115778843, 4231557686, 10578894215, 21157788430]

約数ペア:

[(1, 21157788430), (2, 10578894215), (5, 4231557686), (10, 2115778843), (17, 1244575790), (34, 622287895), (85, 248915158), (170, 124457579)]