20757840

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{86491}}^1$

素因数の和:86507

約数の個数: 40

約数和(自身を含む): 64350048

約数和(自身を除く): 43592208

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 86491, 172982, 259473, 345964, 432455, 518946, 691928, 864910, 1037892, 1297365, 1383856, 1729820, 2075784, 2594730, 3459640, 4151568, 5189460, 6919280, 10378920, 20757840]

約数ペア:

[(1, 20757840), (2, 10378920), (3, 6919280), (4, 5189460), (5, 4151568), (6, 3459640), (8, 2594730), (10, 2075784), (12, 1729820), (15, 1383856), (16, 1297365), (20, 1037892), (24, 864910), (30, 691928), (40, 518946), (48, 432455), (60, 345964), (80, 259473), (120, 172982), (240, 86491)]