81569420

素因数分解:

$2^2\times 5^1\times {\mathrm{367}}^1\times {\mathrm{11113}}^1$

素因数の和:11489

約数の個数: 24

約数和(自身を含む): 171777984

約数和(自身を除く): 90208564

約数列:

[1, 2, 4, 5, 10, 20, 367, 734, 1468, 1835, 3670, 7340, 11113, 22226, 44452, 55565, 111130, 222260, 4078471, 8156942, 16313884, 20392355, 40784710, 81569420]

約数ペア:

[(1, 81569420), (2, 40784710), (4, 20392355), (5, 16313884), (10, 8156942), (20, 4078471), (367, 222260), (734, 111130), (1468, 55565), (1835, 44452), (3670, 22226), (7340, 11113)]