21000718485

素因数分解:

$3^2\times 5^1\times {\mathrm{239}}^1\times {\mathrm{1952647}}^1$

素因数の和:1952897

約数の個数: 24

約数和(自身を含む): 36553570560

約数和(自身を除く): 15552852075

約数列:

[1, 3, 5, 9, 15, 45, 239, 717, 1195, 2151, 3585, 10755, 1952647, 5857941, 9763235, 17573823, 29289705, 87869115, 466682633, 1400047899, 2333413165, 4200143697, 7000239495, 21000718485]

約数ペア:

[(1, 21000718485), (3, 7000239495), (5, 4200143697), (9, 2333413165), (15, 1400047899), (45, 466682633), (239, 87869115), (717, 29289705), (1195, 17573823), (2151, 9763235), (3585, 5857941), (10755, 1952647)]