21472155

素因数分解:

$3^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{3001}}^1$

素因数の和:3068

約数の個数: 32

約数和(自身を含む): 38905920

約数和(自身を除く): 17433765

約数列:

[1, 3, 5, 9, 15, 27, 45, 53, 135, 159, 265, 477, 795, 1431, 2385, 3001, 7155, 9003, 15005, 27009, 45015, 81027, 135045, 159053, 405135, 477159, 795265, 1431477, 2385795, 4294431, 7157385, 21472155]

約数ペア:

[(1, 21472155), (3, 7157385), (5, 4294431), (9, 2385795), (15, 1431477), (27, 795265), (45, 477159), (53, 405135), (135, 159053), (159, 135045), (265, 81027), (477, 45015), (795, 27009), (1431, 15005), (2385, 9003), (3001, 7155)]