20840595

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{409}}^1$

素因数の和:539

約数の個数: 32

約数和(自身を含む): 34636800

約数和(自身を除く): 13796205

約数列:

[1, 3, 5, 15, 43, 79, 129, 215, 237, 395, 409, 645, 1185, 1227, 2045, 3397, 6135, 10191, 16985, 17587, 32311, 50955, 52761, 87935, 96933, 161555, 263805, 484665, 1389373, 4168119, 6946865, 20840595]

約数ペア:

[(1, 20840595), (3, 6946865), (5, 4168119), (15, 1389373), (43, 484665), (79, 263805), (129, 161555), (215, 96933), (237, 87935), (395, 52761), (409, 50955), (645, 32311), (1185, 17587), (1227, 16985), (2045, 10191), (3397, 6135)]