21095540

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{14449}}^1$

素因数の和:14531

約数の個数: 24

約数和(自身を含む): 44910600

約数和(自身を除く): 23815060

約数列:

[1, 2, 4, 5, 10, 20, 73, 146, 292, 365, 730, 1460, 14449, 28898, 57796, 72245, 144490, 288980, 1054777, 2109554, 4219108, 5273885, 10547770, 21095540]

約数ペア:

[(1, 21095540), (2, 10547770), (4, 5273885), (5, 4219108), (10, 2109554), (20, 1054777), (73, 288980), (146, 144490), (292, 72245), (365, 57796), (730, 28898), (1460, 14449)]