15880420

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^2\times {\mathrm{149}}^1$

素因数の和:304

約数の個数: 36

約数和(自身を含む): 34038900

約数和(自身を除く): 18158480

約数列:

[1, 2, 4, 5, 10, 20, 73, 146, 149, 292, 298, 365, 596, 730, 745, 1460, 1490, 2980, 5329, 10658, 10877, 21316, 21754, 26645, 43508, 53290, 54385, 106580, 108770, 217540, 794021, 1588042, 3176084, 3970105, 7940210, 15880420]

約数ペア:

[(1, 15880420), (2, 7940210), (4, 3970105), (5, 3176084), (10, 1588042), (20, 794021), (73, 217540), (146, 108770), (149, 106580), (292, 54385), (298, 53290), (365, 43508), (596, 26645), (730, 21754), (745, 21316), (1460, 10877), (1490, 10658), (2980, 5329)]