668728840

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1286017}}^1$

素因数の和:1286041

約数の個数: 32

約数和(自身を含む): 1620382680

約数和(自身を除く): 951653840

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 1286017, 2572034, 5144068, 6430085, 10288136, 12860170, 16718221, 25720340, 33436442, 51440680, 66872884, 83591105, 133745768, 167182210, 334364420, 668728840]

約数ペア:

[(1, 668728840), (2, 334364420), (4, 167182210), (5, 133745768), (8, 83591105), (10, 66872884), (13, 51440680), (20, 33436442), (26, 25720340), (40, 16718221), (52, 12860170), (65, 10288136), (104, 6430085), (130, 5144068), (260, 2572034), (520, 1286017)]