19699880

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{15887}}^1$

素因数の和:15929

約数の個数: 32

約数和(自身を含む): 45757440

約数和(自身を除く): 26057560

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 15887, 31774, 63548, 79435, 127096, 158870, 317740, 492497, 635480, 984994, 1969988, 2462485, 3939976, 4924970, 9849940, 19699880]

約数ペア:

[(1, 19699880), (2, 9849940), (4, 4924970), (5, 3939976), (8, 2462485), (10, 1969988), (20, 984994), (31, 635480), (40, 492497), (62, 317740), (124, 158870), (155, 127096), (248, 79435), (310, 63548), (620, 31774), (1240, 15887)]