81386175

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^2\times {\mathrm{6421}}^1$

素因数の和:6460

約数の個数: 36

約数和(自身を含む): 145728024

約数和(自身を除く): 64341849

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 75, 169, 195, 325, 507, 845, 975, 2535, 4225, 6421, 12675, 19263, 32105, 83473, 96315, 160525, 250419, 417365, 481575, 1085149, 1252095, 2086825, 3255447, 5425745, 6260475, 16277235, 27128725, 81386175]

約数ペア:

[(1, 81386175), (3, 27128725), (5, 16277235), (13, 6260475), (15, 5425745), (25, 3255447), (39, 2086825), (65, 1252095), (75, 1085149), (169, 481575), (195, 417365), (325, 250419), (507, 160525), (845, 96315), (975, 83473), (2535, 32105), (4225, 19263), (6421, 12675)]