21717008

素因数分解:

$2^4\times {\mathrm{47}}^1\times {\mathrm{28879}}^1$

素因数の和:28934

約数の個数: 20

約数和(自身を含む): 42973440

約数和(自身を除く): 21256432

約数列:

[1, 2, 4, 8, 16, 47, 94, 188, 376, 752, 28879, 57758, 115516, 231032, 462064, 1357313, 2714626, 5429252, 10858504, 21717008]

約数ペア:

[(1, 21717008), (2, 10858504), (4, 5429252), (8, 2714626), (16, 1357313), (47, 462064), (94, 231032), (188, 115516), (376, 57758), (752, 28879)]