20655340

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{769}}^1$

素因数の和:874

約数の個数: 48

約数和(自身を含む): 46569600

約数和(自身を除く): 25914260

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 79, 85, 158, 170, 316, 340, 395, 769, 790, 1343, 1538, 1580, 2686, 3076, 3845, 5372, 6715, 7690, 13073, 13430, 15380, 26146, 26860, 52292, 60751, 65365, 121502, 130730, 243004, 261460, 303755, 607510, 1032767, 1215020, 2065534, 4131068, 5163835, 10327670, 20655340]

約数ペア:

[(1, 20655340), (2, 10327670), (4, 5163835), (5, 4131068), (10, 2065534), (17, 1215020), (20, 1032767), (34, 607510), (68, 303755), (79, 261460), (85, 243004), (158, 130730), (170, 121502), (316, 65365), (340, 60751), (395, 52292), (769, 26860), (790, 26146), (1343, 15380), (1538, 13430), (1580, 13073), (2686, 7690), (3076, 6715), (3845, 5372)]