72284020

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{40609}}^1$

素因数の和:40707

約数の個数: 24

約数和(自身を含む): 153505800

約数和(自身を除く): 81221780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 40609, 81218, 162436, 203045, 406090, 812180, 3614201, 7228402, 14456804, 18071005, 36142010, 72284020]

約数ペア:

[(1, 72284020), (2, 36142010), (4, 18071005), (5, 14456804), (10, 7228402), (20, 3614201), (89, 812180), (178, 406090), (356, 203045), (445, 162436), (890, 81218), (1780, 40609)]