81690860

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{99623}}^1$

素因数の和:99673

約数の個数: 24

約数和(自身を含む): 175736736

約数和(自身を除く): 94045876

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 99623, 199246, 398492, 498115, 996230, 1992460, 4084543, 8169086, 16338172, 20422715, 40845430, 81690860]

約数ペア:

[(1, 81690860), (2, 40845430), (4, 20422715), (5, 16338172), (10, 8169086), (20, 4084543), (41, 1992460), (82, 996230), (164, 498115), (205, 398492), (410, 199246), (820, 99623)]