20940610

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{163}}^1\times {\mathrm{443}}^1$

素因数の和:642

約数の個数: 32

約数和(自身を含む): 39320640

約数和(自身を除く): 18380030

約数列:

[1, 2, 5, 10, 29, 58, 145, 163, 290, 326, 443, 815, 886, 1630, 2215, 4430, 4727, 9454, 12847, 23635, 25694, 47270, 64235, 72209, 128470, 144418, 361045, 722090, 2094061, 4188122, 10470305, 20940610]

約数ペア:

[(1, 20940610), (2, 10470305), (5, 4188122), (10, 2094061), (29, 722090), (58, 361045), (145, 144418), (163, 128470), (290, 72209), (326, 64235), (443, 47270), (815, 25694), (886, 23635), (1630, 12847), (2215, 9454), (4430, 4727)]