28755415

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{491}}^1$

素因数の和:579

約数の個数: 32

約数和(自身を含む): 40170816

約数和(自身を除く): 11415401

約数列:

[1, 5, 13, 17, 53, 65, 85, 221, 265, 491, 689, 901, 1105, 2455, 3445, 4505, 6383, 8347, 11713, 26023, 31915, 41735, 58565, 108511, 130115, 338299, 442391, 542555, 1691495, 2211955, 5751083, 28755415]

約数ペア:

[(1, 28755415), (5, 5751083), (13, 2211955), (17, 1691495), (53, 542555), (65, 442391), (85, 338299), (221, 130115), (265, 108511), (491, 58565), (689, 41735), (901, 31915), (1105, 26023), (2455, 11713), (3445, 8347), (4505, 6383)]