19945765

素因数分解:

$5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{457}}^1$

素因数の和:541

約数の個数: 32

約数和(自身を含む): 29018880

約数和(自身を除く): 9073115

約数列:

[1, 5, 7, 29, 35, 43, 145, 203, 215, 301, 457, 1015, 1247, 1505, 2285, 3199, 6235, 8729, 13253, 15995, 19651, 43645, 66265, 92771, 98255, 137557, 463855, 569879, 687785, 2849395, 3989153, 19945765]

約数ペア:

[(1, 19945765), (5, 3989153), (7, 2849395), (29, 687785), (35, 569879), (43, 463855), (145, 137557), (203, 98255), (215, 92771), (301, 66265), (457, 43645), (1015, 19651), (1247, 15995), (1505, 13253), (2285, 8729), (3199, 6235)]