28191930

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{72287}}^1$

素因数の和:72310

約数の個数: 32

約数和(自身を含む): 72866304

約数和(自身を除く): 44674374

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 72287, 144574, 216861, 361435, 433722, 722870, 939731, 1084305, 1879462, 2168610, 2819193, 4698655, 5638386, 9397310, 14095965, 28191930]

約数ペア:

[(1, 28191930), (2, 14095965), (3, 9397310), (5, 5638386), (6, 4698655), (10, 2819193), (13, 2168610), (15, 1879462), (26, 1084305), (30, 939731), (39, 722870), (65, 433722), (78, 361435), (130, 216861), (195, 144574), (390, 72287)]