128535940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{494369}}^1$

素因数の和:494391

約数の個数: 24

約数和(自身を含む): 290689560

約数和(自身を除く): 162153620

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 494369, 988738, 1977476, 2471845, 4943690, 6426797, 9887380, 12853594, 25707188, 32133985, 64267970, 128535940]

約数ペア:

[(1, 128535940), (2, 64267970), (4, 32133985), (5, 25707188), (10, 12853594), (13, 9887380), (20, 6426797), (26, 4943690), (52, 2471845), (65, 1977476), (130, 988738), (260, 494369)]