20621320

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^2\times {\mathrm{613}}^1$

素因数の和:682

約数の個数: 48

約数和(自身を含む): 48131460

約数和(自身を除く): 27510140

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 145, 232, 290, 580, 613, 841, 1160, 1226, 1682, 2452, 3065, 3364, 4205, 4904, 6130, 6728, 8410, 12260, 16820, 17777, 24520, 33640, 35554, 71108, 88885, 142216, 177770, 355540, 515533, 711080, 1031066, 2062132, 2577665, 4124264, 5155330, 10310660, 20621320]

約数ペア:

[(1, 20621320), (2, 10310660), (4, 5155330), (5, 4124264), (8, 2577665), (10, 2062132), (20, 1031066), (29, 711080), (40, 515533), (58, 355540), (116, 177770), (145, 142216), (232, 88885), (290, 71108), (580, 35554), (613, 33640), (841, 24520), (1160, 17777), (1226, 16820), (1682, 12260), (2452, 8410), (3065, 6728), (3364, 6130), (4205, 4904)]