160820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1$

素因数の和:80

約数の個数: 48

約数和(自身を含む): 399168

約数和(自身を除く): 238348

約数列:

[1, 2, 4, 5, 10, 11, 17, 20, 22, 34, 43, 44, 55, 68, 85, 86, 110, 170, 172, 187, 215, 220, 340, 374, 430, 473, 731, 748, 860, 935, 946, 1462, 1870, 1892, 2365, 2924, 3655, 3740, 4730, 7310, 8041, 9460, 14620, 16082, 32164, 40205, 80410, 160820]

約数ペア:

[(1, 160820), (2, 80410), (4, 40205), (5, 32164), (10, 16082), (11, 14620), (17, 9460), (20, 8041), (22, 7310), (34, 4730), (43, 3740), (44, 3655), (55, 2924), (68, 2365), (85, 1892), (86, 1870), (110, 1462), (170, 946), (172, 935), (187, 860), (215, 748), (220, 731), (340, 473), (374, 430)]