640018032

素因数分解:

$2^4\times 3^1\times {\mathrm{13333709}}^1$

素因数の和:13333720

約数の個数: 20

約数和(自身を含む): 1653380040

約数和(自身を除く): 1013362008

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 48, 13333709, 26667418, 40001127, 53334836, 80002254, 106669672, 160004508, 213339344, 320009016, 640018032]

約数ペア:

[(1, 640018032), (2, 320009016), (3, 213339344), (4, 160004508), (6, 106669672), (8, 80002254), (12, 53334836), (16, 40001127), (24, 26667418), (48, 13333709)]