19997530

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{9851}}^1$

素因数の和:9894

約数の個数: 32

約数和(自身を含む): 42560640

約数和(自身を除く): 22563110

約数列:

[1, 2, 5, 7, 10, 14, 29, 35, 58, 70, 145, 203, 290, 406, 1015, 2030, 9851, 19702, 49255, 68957, 98510, 137914, 285679, 344785, 571358, 689570, 1428395, 1999753, 2856790, 3999506, 9998765, 19997530]

約数ペア:

[(1, 19997530), (2, 9998765), (5, 3999506), (7, 2856790), (10, 1999753), (14, 1428395), (29, 689570), (35, 571358), (58, 344785), (70, 285679), (145, 137914), (203, 98510), (290, 68957), (406, 49255), (1015, 19702), (2030, 9851)]