18728840

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{36017}}^1$

素因数の和:36041

約数の個数: 32

約数和(自身を含む): 45382680

約数和(自身を除く): 26653840

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 36017, 72034, 144068, 180085, 288136, 360170, 468221, 720340, 936442, 1440680, 1872884, 2341105, 3745768, 4682210, 9364420, 18728840]

約数ペア:

[(1, 18728840), (2, 9364420), (4, 4682210), (5, 3745768), (8, 2341105), (10, 1872884), (13, 1440680), (20, 936442), (26, 720340), (40, 468221), (52, 360170), (65, 288136), (104, 180085), (130, 144068), (260, 72034), (520, 36017)]