20157008

素因数分解:

$2^4\times {\mathrm{37}}^1\times {\mathrm{79}}^1\times {\mathrm{431}}^1$

素因数の和:555

約数の個数: 40

約数和(自身を含む): 40711680

約数和(自身を除く): 20554672

約数列:

[1, 2, 4, 8, 16, 37, 74, 79, 148, 158, 296, 316, 431, 592, 632, 862, 1264, 1724, 2923, 3448, 5846, 6896, 11692, 15947, 23384, 31894, 34049, 46768, 63788, 68098, 127576, 136196, 255152, 272392, 544784, 1259813, 2519626, 5039252, 10078504, 20157008]

約数ペア:

[(1, 20157008), (2, 10078504), (4, 5039252), (8, 2519626), (16, 1259813), (37, 544784), (74, 272392), (79, 255152), (148, 136196), (158, 127576), (296, 68098), (316, 63788), (431, 46768), (592, 34049), (632, 31894), (862, 23384), (1264, 15947), (1724, 11692), (2923, 6896), (3448, 5846)]