18520840

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{35617}}^1$

素因数の和:35641

約数の個数: 32

約数和(自身を含む): 44878680

約数和(自身を除く): 26357840

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 35617, 71234, 142468, 178085, 284936, 356170, 463021, 712340, 926042, 1424680, 1852084, 2315105, 3704168, 4630210, 9260420, 18520840]

約数ペア:

[(1, 18520840), (2, 9260420), (4, 4630210), (5, 3704168), (8, 2315105), (10, 1852084), (13, 1424680), (20, 926042), (26, 712340), (40, 463021), (52, 356170), (65, 284936), (104, 178085), (130, 142468), (260, 71234), (520, 35617)]