20123997640

素因数分解:

$2^3\times 5^1\times {\mathrm{13679}}^1\times {\mathrm{36779}}^1$

素因数の和:50469

約数の個数: 32

約数和(自身を含む): 45283536000

約数和(自身を除く): 25159538360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 13679, 27358, 36779, 54716, 68395, 73558, 109432, 136790, 147116, 183895, 273580, 294232, 367790, 547160, 735580, 1471160, 503099941, 1006199882, 2012399764, 2515499705, 4024799528, 5030999410, 10061998820, 20123997640]

約数ペア:

[(1, 20123997640), (2, 10061998820), (4, 5030999410), (5, 4024799528), (8, 2515499705), (10, 2012399764), (20, 1006199882), (40, 503099941), (13679, 1471160), (27358, 735580), (36779, 547160), (54716, 367790), (68395, 294232), (73558, 273580), (109432, 183895), (136790, 147116)]