19748980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{51971}}^1$

素因数の和:51999

約数の個数: 24

約数和(自身を含む): 43656480

約数和(自身を除く): 23907500

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 51971, 103942, 207884, 259855, 519710, 987449, 1039420, 1974898, 3949796, 4937245, 9874490, 19748980]

約数ペア:

[(1, 19748980), (2, 9874490), (4, 4937245), (5, 3949796), (10, 1974898), (19, 1039420), (20, 987449), (38, 519710), (76, 259855), (95, 207884), (190, 103942), (380, 51971)]