18723740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{7039}}^1$

素因数の和:7074

約数の個数: 48

約数和(自身を含む): 47308800

約数和(自身を除く): 28585060

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 70, 76, 95, 133, 140, 190, 266, 380, 532, 665, 1330, 2660, 7039, 14078, 28156, 35195, 49273, 70390, 98546, 133741, 140780, 197092, 246365, 267482, 492730, 534964, 668705, 936187, 985460, 1337410, 1872374, 2674820, 3744748, 4680935, 9361870, 18723740]

約数ペア:

[(1, 18723740), (2, 9361870), (4, 4680935), (5, 3744748), (7, 2674820), (10, 1872374), (14, 1337410), (19, 985460), (20, 936187), (28, 668705), (35, 534964), (38, 492730), (70, 267482), (76, 246365), (95, 197092), (133, 140780), (140, 133741), (190, 98546), (266, 70390), (380, 49273), (532, 35195), (665, 28156), (1330, 14078), (2660, 7039)]