20399684753

素因数分解:

$7^2\times {\mathrm{127}}^1\times {\mathrm{571}}^1\times {\mathrm{5741}}^1$

素因数の和:6453

約数の個数: 24

約数和(自身を含む): 23963157504

約数和(自身を除く): 3563472751

約数列:

[1, 7, 49, 127, 571, 889, 3997, 5741, 6223, 27979, 40187, 72517, 281309, 507619, 729107, 3278111, 3553333, 5103749, 22946777, 35726243, 160627439, 416320097, 2914240679, 20399684753]

約数ペア:

[(1, 20399684753), (7, 2914240679), (49, 416320097), (127, 160627439), (571, 35726243), (889, 22946777), (3997, 5103749), (5741, 3553333), (6223, 3278111), (27979, 729107), (40187, 507619), (72517, 281309)]