18954920

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{8941}}^1$

素因数の和:9005

約数の個数: 32

約数和(自身を含む): 43458120

約数和(自身を除く): 24503200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 212, 265, 424, 530, 1060, 2120, 8941, 17882, 35764, 44705, 71528, 89410, 178820, 357640, 473873, 947746, 1895492, 2369365, 3790984, 4738730, 9477460, 18954920]

約数ペア:

[(1, 18954920), (2, 9477460), (4, 4738730), (5, 3790984), (8, 2369365), (10, 1895492), (20, 947746), (40, 473873), (53, 357640), (106, 178820), (212, 89410), (265, 71528), (424, 44705), (530, 35764), (1060, 17882), (2120, 8941)]