17980

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1$

素因数の和:69

約数の個数: 24

約数和(自身を含む): 40320

約数和(自身を除く): 22340

約数列:

[1, 2, 4, 5, 10, 20, 29, 31, 58, 62, 116, 124, 145, 155, 290, 310, 580, 620, 899, 1798, 3596, 4495, 8990, 17980]

約数ペア:

[(1, 17980), (2, 8990), (4, 4495), (5, 3596), (10, 1798), (20, 899), (29, 620), (31, 580), (58, 310), (62, 290), (116, 155), (124, 145)]