20199515

素因数分解:

$5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{2843}}^1$

素因数の和:2891

約数の個数: 24

約数和(自身を含む): 29179440

約数和(自身を除く): 8979925

約数列:

[1, 5, 7, 29, 35, 49, 145, 203, 245, 1015, 1421, 2843, 7105, 14215, 19901, 82447, 99505, 139307, 412235, 577129, 696535, 2885645, 4039903, 20199515]

約数ペア:

[(1, 20199515), (5, 4039903), (7, 2885645), (29, 696535), (35, 577129), (49, 412235), (145, 139307), (203, 99505), (245, 82447), (1015, 19901), (1421, 14215), (2843, 7105)]