18306980

素因数分解:

$2^2\times 5^1\times {\mathrm{839}}^1\times {\mathrm{1091}}^1$

素因数の和:1939

約数の個数: 24

約数和(自身を含む): 38525760

約数和(自身を除く): 20218780

約数列:

[1, 2, 4, 5, 10, 20, 839, 1091, 1678, 2182, 3356, 4195, 4364, 5455, 8390, 10910, 16780, 21820, 915349, 1830698, 3661396, 4576745, 9153490, 18306980]

約数ペア:

[(1, 18306980), (2, 9153490), (4, 4576745), (5, 3661396), (10, 1830698), (20, 915349), (839, 21820), (1091, 16780), (1678, 10910), (2182, 8390), (3356, 5455), (4195, 4364)]