28386995

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{701}}^1$

素因数の和:815

約数の個数: 32

約数和(自身を含む): 42456960

約数和(自身を除く): 14069965

約数列:

[1, 5, 7, 13, 35, 65, 89, 91, 445, 455, 623, 701, 1157, 3115, 3505, 4907, 5785, 8099, 9113, 24535, 40495, 45565, 62389, 63791, 311945, 318955, 436723, 811057, 2183615, 4055285, 5677399, 28386995]

約数ペア:

[(1, 28386995), (5, 5677399), (7, 4055285), (13, 2183615), (35, 811057), (65, 436723), (89, 318955), (91, 311945), (445, 63791), (455, 62389), (623, 45565), (701, 40495), (1157, 24535), (3115, 9113), (3505, 8099), (4907, 5785)]