21491128

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{8317}}^1$

素因数の和:8359

約数の個数: 32

約数和(自身を含む): 44917200

約数和(自身を除く): 23426072

約数列:

[1, 2, 4, 8, 17, 19, 34, 38, 68, 76, 136, 152, 323, 646, 1292, 2584, 8317, 16634, 33268, 66536, 141389, 158023, 282778, 316046, 565556, 632092, 1131112, 1264184, 2686391, 5372782, 10745564, 21491128]

約数ペア:

[(1, 21491128), (2, 10745564), (4, 5372782), (8, 2686391), (17, 1264184), (19, 1131112), (34, 632092), (38, 565556), (68, 316046), (76, 282778), (136, 158023), (152, 141389), (323, 66536), (646, 33268), (1292, 16634), (2584, 8317)]