90974020

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{51109}}^1$

素因数の和:51207

約数の個数: 24

約数和(自身を含む): 193195800

約数和(自身を除く): 102221780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 51109, 102218, 204436, 255545, 511090, 1022180, 4548701, 9097402, 18194804, 22743505, 45487010, 90974020]

約数ペア:

[(1, 90974020), (2, 45487010), (4, 22743505), (5, 18194804), (10, 9097402), (20, 4548701), (89, 1022180), (178, 511090), (356, 255545), (445, 204436), (890, 102218), (1780, 51109)]