21490878

素因数分解:

$2^1\times 3^1\times {\mathrm{23}}^1\times {\mathrm{155731}}^1$

素因数の和:155759

約数の個数: 16

約数和(自身を含む): 44850816

約数和(自身を除く): 23359938

約数列:

[1, 2, 3, 6, 23, 46, 69, 138, 155731, 311462, 467193, 934386, 3581813, 7163626, 10745439, 21490878]

約数ペア:

[(1, 21490878), (2, 10745439), (3, 7163626), (6, 3581813), (23, 934386), (46, 467193), (69, 311462), (138, 155731)]