21385740

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{101}}^1\times {\mathrm{3529}}^1$

素因数の和:3642

約数の個数: 48

約数和(自身を含む): 60490080

約数和(自身を除く): 39104340

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 101, 202, 303, 404, 505, 606, 1010, 1212, 1515, 2020, 3030, 3529, 6060, 7058, 10587, 14116, 17645, 21174, 35290, 42348, 52935, 70580, 105870, 211740, 356429, 712858, 1069287, 1425716, 1782145, 2138574, 3564290, 4277148, 5346435, 7128580, 10692870, 21385740]

約数ペア:

[(1, 21385740), (2, 10692870), (3, 7128580), (4, 5346435), (5, 4277148), (6, 3564290), (10, 2138574), (12, 1782145), (15, 1425716), (20, 1069287), (30, 712858), (60, 356429), (101, 211740), (202, 105870), (303, 70580), (404, 52935), (505, 42348), (606, 35290), (1010, 21174), (1212, 17645), (1515, 14116), (2020, 10587), (3030, 7058), (3529, 6060)]