81663720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{680531}}^1$

素因数の和:680545

約数の個数: 32

約数和(自身を含む): 244991520

約数和(自身を除く): 163327800

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 680531, 1361062, 2041593, 2722124, 3402655, 4083186, 5444248, 6805310, 8166372, 10207965, 13610620, 16332744, 20415930, 27221240, 40831860, 81663720]

約数ペア:

[(1, 81663720), (2, 40831860), (3, 27221240), (4, 20415930), (5, 16332744), (6, 13610620), (8, 10207965), (10, 8166372), (12, 6805310), (15, 5444248), (20, 4083186), (24, 3402655), (30, 2722124), (40, 2041593), (60, 1361062), (120, 680531)]