489587320

素因数分解:

$2^3\times 5^1\times {\mathrm{691}}^1\times {\mathrm{17713}}^1$

素因数の和:18415

約数の個数: 32

約数和(自身を含む): 1103227920

約数和(自身を除く): 613640600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 691, 1382, 2764, 3455, 5528, 6910, 13820, 17713, 27640, 35426, 70852, 88565, 141704, 177130, 354260, 708520, 12239683, 24479366, 48958732, 61198415, 97917464, 122396830, 244793660, 489587320]

約数ペア:

[(1, 489587320), (2, 244793660), (4, 122396830), (5, 97917464), (8, 61198415), (10, 48958732), (20, 24479366), (40, 12239683), (691, 708520), (1382, 354260), (2764, 177130), (3455, 141704), (5528, 88565), (6910, 70852), (13820, 35426), (17713, 27640)]