2158120

素因数分解:

$2^3\times 5^1\times {\mathrm{163}}^1\times {\mathrm{331}}^1$

素因数の和:505

約数の個数: 32

約数和(自身を含む): 4900320

約数和(自身を除く): 2742200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 163, 326, 331, 652, 662, 815, 1304, 1324, 1630, 1655, 2648, 3260, 3310, 6520, 6620, 13240, 53953, 107906, 215812, 269765, 431624, 539530, 1079060, 2158120]

約数ペア:

[(1, 2158120), (2, 1079060), (4, 539530), (5, 431624), (8, 269765), (10, 215812), (20, 107906), (40, 53953), (163, 13240), (326, 6620), (331, 6520), (652, 3310), (662, 3260), (815, 2648), (1304, 1655), (1324, 1630)]