87191420

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{106331}}^1$

素因数の和:106381

約数の個数: 24

約数和(自身を含む): 187569648

約数和(自身を除く): 100378228

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 106331, 212662, 425324, 531655, 1063310, 2126620, 4359571, 8719142, 17438284, 21797855, 43595710, 87191420]

約数ペア:

[(1, 87191420), (2, 43595710), (4, 21797855), (5, 17438284), (10, 8719142), (20, 4359571), (41, 2126620), (82, 1063310), (164, 531655), (205, 425324), (410, 212662), (820, 106331)]