19902200

素因数分解:

$2^3\times 5^2\times {\mathrm{191}}^1\times {\mathrm{521}}^1$

素因数の和:728

約数の個数: 48

約数和(自身を含む): 46604160

約数和(自身を除く): 26701960

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 191, 200, 382, 521, 764, 955, 1042, 1528, 1910, 2084, 2605, 3820, 4168, 4775, 5210, 7640, 9550, 10420, 13025, 19100, 20840, 26050, 38200, 52100, 99511, 104200, 199022, 398044, 497555, 796088, 995110, 1990220, 2487775, 3980440, 4975550, 9951100, 19902200]

約数ペア:

[(1, 19902200), (2, 9951100), (4, 4975550), (5, 3980440), (8, 2487775), (10, 1990220), (20, 995110), (25, 796088), (40, 497555), (50, 398044), (100, 199022), (191, 104200), (200, 99511), (382, 52100), (521, 38200), (764, 26050), (955, 20840), (1042, 19100), (1528, 13025), (1910, 10420), (2084, 9550), (2605, 7640), (3820, 5210), (4168, 4775)]