19979430

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{665981}}^1$

素因数の和:665991

約数の個数: 16

約数和(自身を含む): 47950704

約数和(自身を除く): 27971274

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 665981, 1331962, 1997943, 3329905, 3995886, 6659810, 9989715, 19979430]

約数ペア:

[(1, 19979430), (2, 9989715), (3, 6659810), (5, 3995886), (6, 3329905), (10, 1997943), (15, 1331962), (30, 665981)]