21205128676

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{601}}^1\times {\mathrm{464251}}^1$

素因数の和:464875

約数の個数: 24

約数和(自身を含む): 39127158560

約数和(自身を除く): 17922029884

約数列:

[1, 2, 4, 19, 38, 76, 601, 1202, 2404, 11419, 22838, 45676, 464251, 928502, 1857004, 8820769, 17641538, 35283076, 279014851, 558029702, 1116059404, 5301282169, 10602564338, 21205128676]

約数ペア:

[(1, 21205128676), (2, 10602564338), (4, 5301282169), (19, 1116059404), (38, 558029702), (76, 279014851), (601, 35283076), (1202, 17641538), (2404, 8820769), (11419, 1857004), (22838, 928502), (45676, 464251)]