20150

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1$

素因数の和:56

約数の個数: 24

約数和(自身を含む): 41664

約数和(自身を除く): 21514

約数列:

[1, 2, 5, 10, 13, 25, 26, 31, 50, 62, 65, 130, 155, 310, 325, 403, 650, 775, 806, 1550, 2015, 4030, 10075, 20150]

約数ペア:

[(1, 20150), (2, 10075), (5, 4030), (10, 2015), (13, 1550), (25, 806), (26, 775), (31, 650), (50, 403), (62, 325), (65, 310), (130, 155)]