1984798840

素因数分解:

$2^3\times 5^1\times {\mathrm{163}}^1\times {\mathrm{304417}}^1$

素因数の和:304591

約数の個数: 32

約数和(自身を含む): 4493209680

約数和(自身を除く): 2508410840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 163, 326, 652, 815, 1304, 1630, 3260, 6520, 304417, 608834, 1217668, 1522085, 2435336, 3044170, 6088340, 12176680, 49619971, 99239942, 198479884, 248099855, 396959768, 496199710, 992399420, 1984798840]

約数ペア:

[(1, 1984798840), (2, 992399420), (4, 496199710), (5, 396959768), (8, 248099855), (10, 198479884), (20, 99239942), (40, 49619971), (163, 12176680), (326, 6088340), (652, 3044170), (815, 2435336), (1304, 1522085), (1630, 1217668), (3260, 608834), (6520, 304417)]