20158840

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{38767}}^1$

素因数の和:38791

約数の個数: 32

約数和(自身を含む): 48847680

約数和(自身を除く): 28688840

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 38767, 77534, 155068, 193835, 310136, 387670, 503971, 775340, 1007942, 1550680, 2015884, 2519855, 4031768, 5039710, 10079420, 20158840]

約数ペア:

[(1, 20158840), (2, 10079420), (4, 5039710), (5, 4031768), (8, 2519855), (10, 2015884), (13, 1550680), (20, 1007942), (26, 775340), (40, 503971), (52, 387670), (65, 310136), (104, 193835), (130, 155068), (260, 77534), (520, 38767)]