20707875

素因数分解:

$3^2\times 5^3\times {\mathrm{79}}^1\times {\mathrm{233}}^1$

素因数の和:333

約数の個数: 48

約数和(自身を含む): 37964160

約数和(自身を除く): 17256285

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 79, 125, 225, 233, 237, 375, 395, 699, 711, 1125, 1165, 1185, 1975, 2097, 3495, 3555, 5825, 5925, 9875, 10485, 17475, 17775, 18407, 29125, 29625, 52425, 55221, 87375, 88875, 92035, 165663, 262125, 276105, 460175, 828315, 1380525, 2300875, 4141575, 6902625, 20707875]

約数ペア:

[(1, 20707875), (3, 6902625), (5, 4141575), (9, 2300875), (15, 1380525), (25, 828315), (45, 460175), (75, 276105), (79, 262125), (125, 165663), (225, 92035), (233, 88875), (237, 87375), (375, 55221), (395, 52425), (699, 29625), (711, 29125), (1125, 18407), (1165, 17775), (1185, 17475), (1975, 10485), (2097, 9875), (3495, 5925), (3555, 5825)]