28720900

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{22093}}^1$

素因数の和:22120

約数の個数: 36

約数和(自身を含む): 67121572

約数和(自身を除く): 38400672

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 130, 260, 325, 650, 1300, 22093, 44186, 88372, 110465, 220930, 287209, 441860, 552325, 574418, 1104650, 1148836, 1436045, 2209300, 2872090, 5744180, 7180225, 14360450, 28720900]

約数ペア:

[(1, 28720900), (2, 14360450), (4, 7180225), (5, 5744180), (10, 2872090), (13, 2209300), (20, 1436045), (25, 1148836), (26, 1104650), (50, 574418), (52, 552325), (65, 441860), (100, 287209), (130, 220930), (260, 110465), (325, 88372), (650, 44186), (1300, 22093)]