20107995

素因数分解:

$3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{521}}^1$

素因数の和:643

約数の個数: 32

約数和(自身を含む): 33675264

約数和(自身を除く): 13567269

約数列:

[1, 3, 5, 15, 31, 83, 93, 155, 249, 415, 465, 521, 1245, 1563, 2573, 2605, 7719, 7815, 12865, 16151, 38595, 43243, 48453, 80755, 129729, 216215, 242265, 648645, 1340533, 4021599, 6702665, 20107995]

約数ペア:

[(1, 20107995), (3, 6702665), (5, 4021599), (15, 1340533), (31, 648645), (83, 242265), (93, 216215), (155, 129729), (249, 80755), (415, 48453), (465, 43243), (521, 38595), (1245, 16151), (1563, 12865), (2573, 7815), (2605, 7719)]