19791500

素因数分解:

$2^2\times 5^3\times {\mathrm{23}}^1\times {\mathrm{1721}}^1$

素因数の和:1763

約数の個数: 48

約数和(自身を含む): 45130176

約数和(自身を除く): 25338676

約数列:

[1, 2, 4, 5, 10, 20, 23, 25, 46, 50, 92, 100, 115, 125, 230, 250, 460, 500, 575, 1150, 1721, 2300, 2875, 3442, 5750, 6884, 8605, 11500, 17210, 34420, 39583, 43025, 79166, 86050, 158332, 172100, 197915, 215125, 395830, 430250, 791660, 860500, 989575, 1979150, 3958300, 4947875, 9895750, 19791500]

約数ペア:

[(1, 19791500), (2, 9895750), (4, 4947875), (5, 3958300), (10, 1979150), (20, 989575), (23, 860500), (25, 791660), (46, 430250), (50, 395830), (92, 215125), (100, 197915), (115, 172100), (125, 158332), (230, 86050), (250, 79166), (460, 43025), (500, 39583), (575, 34420), (1150, 17210), (1721, 11500), (2300, 8605), (2875, 6884), (3442, 5750)]