18766840

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{6427}}^1$

素因数の和:6511

約数の個数: 32

約数和(自身を含む): 42810480

約数和(自身を除く): 24043640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460, 2920, 6427, 12854, 25708, 32135, 51416, 64270, 128540, 257080, 469171, 938342, 1876684, 2345855, 3753368, 4691710, 9383420, 18766840]

約数ペア:

[(1, 18766840), (2, 9383420), (4, 4691710), (5, 3753368), (8, 2345855), (10, 1876684), (20, 938342), (40, 469171), (73, 257080), (146, 128540), (292, 64270), (365, 51416), (584, 32135), (730, 25708), (1460, 12854), (2920, 6427)]