18898820

素因数分解:

$2^2\times 5^1\times {\mathrm{179}}^1\times {\mathrm{5279}}^1$

素因数の和:5467

約数の個数: 24

約数和(自身を含む): 39916800

約数和(自身を除く): 21017980

約数列:

[1, 2, 4, 5, 10, 20, 179, 358, 716, 895, 1790, 3580, 5279, 10558, 21116, 26395, 52790, 105580, 944941, 1889882, 3779764, 4724705, 9449410, 18898820]

約数ペア:

[(1, 18898820), (2, 9449410), (4, 4724705), (5, 3779764), (10, 1889882), (20, 944941), (179, 105580), (358, 52790), (716, 26395), (895, 21116), (1790, 10558), (3580, 5279)]