21000273808

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{77206889}}^1$

素因数の和:77206914

約数の個数: 20

約数和(自身を含む): 43081444620

約数和(自身を除く): 22081170812

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 77206889, 154413778, 308827556, 617655112, 1235310224, 1312517113, 2625034226, 5250068452, 10500136904, 21000273808]

約数ペア:

[(1, 21000273808), (2, 10500136904), (4, 5250068452), (8, 2625034226), (16, 1312517113), (17, 1235310224), (34, 617655112), (68, 308827556), (136, 154413778), (272, 77206889)]