87451780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{336353}}^1$

素因数の和:336375

約数の個数: 24

約数和(自身を含む): 197776152

約数和(自身を除く): 110324372

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 336353, 672706, 1345412, 1681765, 3363530, 4372589, 6727060, 8745178, 17490356, 21862945, 43725890, 87451780]

約数ペア:

[(1, 87451780), (2, 43725890), (4, 21862945), (5, 17490356), (10, 8745178), (13, 6727060), (20, 4372589), (26, 3363530), (52, 1681765), (65, 1345412), (130, 672706), (260, 336353)]