138821420

素因数分解:

$2^2\times 5^1\times {\mathrm{367}}^1\times {\mathrm{18913}}^1$

素因数の和:19289

約数の個数: 24

約数和(自身を含む): 292334784

約数和(自身を除く): 153513364

約数列:

[1, 2, 4, 5, 10, 20, 367, 734, 1468, 1835, 3670, 7340, 18913, 37826, 75652, 94565, 189130, 378260, 6941071, 13882142, 27764284, 34705355, 69410710, 138821420]

約数ペア:

[(1, 138821420), (2, 69410710), (4, 34705355), (5, 27764284), (10, 13882142), (20, 6941071), (367, 378260), (734, 189130), (1468, 94565), (1835, 75652), (3670, 37826), (7340, 18913)]