81267820

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{239023}}^1$

素因数の和:239049

約数の個数: 24

約数和(自身を含む): 180702144

約数和(自身を除く): 99434324

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 239023, 478046, 956092, 1195115, 2390230, 4063391, 4780460, 8126782, 16253564, 20316955, 40633910, 81267820]

約数ペア:

[(1, 81267820), (2, 40633910), (4, 20316955), (5, 16253564), (10, 8126782), (17, 4780460), (20, 4063391), (34, 2390230), (68, 1195115), (85, 956092), (170, 478046), (340, 239023)]