28971995

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{157}}^1\times {\mathrm{167}}^1$

素因数の和:359

約数の個数: 32

約数和(自身を含む): 40134528

約数和(自身を除く): 11162533

約数列:

[1, 5, 13, 17, 65, 85, 157, 167, 221, 785, 835, 1105, 2041, 2171, 2669, 2839, 10205, 10855, 13345, 14195, 26219, 34697, 36907, 131095, 173485, 184535, 340847, 445723, 1704235, 2228615, 5794399, 28971995]

約数ペア:

[(1, 28971995), (5, 5794399), (13, 2228615), (17, 1704235), (65, 445723), (85, 340847), (157, 184535), (167, 173485), (221, 131095), (785, 36907), (835, 34697), (1105, 26219), (2041, 14195), (2171, 13345), (2669, 10855), (2839, 10205)]