38931620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{21391}}^1$

素因数の和:21420

約数の個数: 48

約数和(自身を含む): 100627968

約数和(自身を除く): 61696348

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 21391, 42782, 85564, 106955, 149737, 213910, 278083, 299474, 427820, 556166, 598948, 748685, 1112332, 1390415, 1497370, 1946581, 2780830, 2994740, 3893162, 5561660, 7786324, 9732905, 19465810, 38931620]

約数ペア:

[(1, 38931620), (2, 19465810), (4, 9732905), (5, 7786324), (7, 5561660), (10, 3893162), (13, 2994740), (14, 2780830), (20, 1946581), (26, 1497370), (28, 1390415), (35, 1112332), (52, 748685), (65, 598948), (70, 556166), (91, 427820), (130, 299474), (140, 278083), (182, 213910), (260, 149737), (364, 106955), (455, 85564), (910, 42782), (1820, 21391)]