78342820

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{55171}}^1$

素因数の和:55251

約数の個数: 24

約数和(自身を含む): 166840128

約数和(自身を除く): 88497308

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 55171, 110342, 220684, 275855, 551710, 1103420, 3917141, 7834282, 15668564, 19585705, 39171410, 78342820]

約数ペア:

[(1, 78342820), (2, 39171410), (4, 19585705), (5, 15668564), (10, 7834282), (20, 3917141), (71, 1103420), (142, 551710), (284, 275855), (355, 220684), (710, 110342), (1420, 55171)]