205943140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{653}}^1\times {\mathrm{1213}}^1$

素因数の和:1888

約数の個数: 48

約数和(自身を含む): 466846128

約数和(自身を除く): 260902988

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 653, 1213, 1306, 2426, 2612, 3265, 4852, 6065, 6530, 8489, 12130, 13060, 15769, 16978, 24260, 31538, 33956, 42445, 63076, 78845, 84890, 157690, 169780, 315380, 792089, 1584178, 3168356, 3960445, 7920890, 10297157, 15841780, 20594314, 41188628, 51485785, 102971570, 205943140]

約数ペア:

[(1, 205943140), (2, 102971570), (4, 51485785), (5, 41188628), (10, 20594314), (13, 15841780), (20, 10297157), (26, 7920890), (52, 3960445), (65, 3168356), (130, 1584178), (260, 792089), (653, 315380), (1213, 169780), (1306, 157690), (2426, 84890), (2612, 78845), (3265, 63076), (4852, 42445), (6065, 33956), (6530, 31538), (8489, 24260), (12130, 16978), (13060, 15769)]