20858520

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{101}}^1\times {\mathrm{1721}}^1$

素因数の和:1836

約数の個数: 64

約数和(自身を含む): 63231840

約数和(自身を除く): 42373320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 101, 120, 202, 303, 404, 505, 606, 808, 1010, 1212, 1515, 1721, 2020, 2424, 3030, 3442, 4040, 5163, 6060, 6884, 8605, 10326, 12120, 13768, 17210, 20652, 25815, 34420, 41304, 51630, 68840, 103260, 173821, 206520, 347642, 521463, 695284, 869105, 1042926, 1390568, 1738210, 2085852, 2607315, 3476420, 4171704, 5214630, 6952840, 10429260, 20858520]

約数ペア:

[(1, 20858520), (2, 10429260), (3, 6952840), (4, 5214630), (5, 4171704), (6, 3476420), (8, 2607315), (10, 2085852), (12, 1738210), (15, 1390568), (20, 1042926), (24, 869105), (30, 695284), (40, 521463), (60, 347642), (101, 206520), (120, 173821), (202, 103260), (303, 68840), (404, 51630), (505, 41304), (606, 34420), (808, 25815), (1010, 20652), (1212, 17210), (1515, 13768), (1721, 12120), (2020, 10326), (2424, 8605), (3030, 6884), (3442, 6060), (4040, 5163)]