865540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{3329}}^1$

素因数の和:3351

約数の個数: 24

約数和(自身を含む): 1958040

約数和(自身を除く): 1092500

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 3329, 6658, 13316, 16645, 33290, 43277, 66580, 86554, 173108, 216385, 432770, 865540]

約数ペア:

[(1, 865540), (2, 432770), (4, 216385), (5, 173108), (10, 86554), (13, 66580), (20, 43277), (26, 33290), (52, 16645), (65, 13316), (130, 6658), (260, 3329)]