64435540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{247829}}^1$

素因数の和:247851

約数の個数: 24

約数和(自身を含む): 145724040

約数和(自身を除く): 81288500

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 247829, 495658, 991316, 1239145, 2478290, 3221777, 4956580, 6443554, 12887108, 16108885, 32217770, 64435540]

約数ペア:

[(1, 64435540), (2, 32217770), (4, 16108885), (5, 12887108), (10, 6443554), (13, 4956580), (20, 3221777), (26, 2478290), (52, 1239145), (65, 991316), (130, 495658), (260, 247829)]