20210815870

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{1601}}^1\times {\mathrm{25763}}^1$

素因数の和:27385

約数の個数: 48

約数和(自身を含む): 42347050128

約数和(自身を除く): 22136234258

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490, 1601, 3202, 8005, 11207, 16010, 22414, 25763, 51526, 56035, 78449, 112070, 128815, 156898, 180341, 257630, 360682, 392245, 784490, 901705, 1262387, 1803410, 2524774, 6311935, 12623870, 41246563, 82493126, 206232815, 288725941, 412465630, 577451882, 1443629705, 2021081587, 2887259410, 4042163174, 10105407935, 20210815870]

約数ペア:

[(1, 20210815870), (2, 10105407935), (5, 4042163174), (7, 2887259410), (10, 2021081587), (14, 1443629705), (35, 577451882), (49, 412465630), (70, 288725941), (98, 206232815), (245, 82493126), (490, 41246563), (1601, 12623870), (3202, 6311935), (8005, 2524774), (11207, 1803410), (16010, 1262387), (22414, 901705), (25763, 784490), (51526, 392245), (56035, 360682), (78449, 257630), (112070, 180341), (128815, 156898)]