18849980

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{17783}}^1$

素因数の和:17845

約数の個数: 24

約数和(自身を含む): 40334112

約数和(自身を除く): 21484132

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 212, 265, 530, 1060, 17783, 35566, 71132, 88915, 177830, 355660, 942499, 1884998, 3769996, 4712495, 9424990, 18849980]

約数ペア:

[(1, 18849980), (2, 9424990), (4, 4712495), (5, 3769996), (10, 1884998), (20, 942499), (53, 355660), (106, 177830), (212, 88915), (265, 71132), (530, 35566), (1060, 17783)]