19937890

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{6947}}^1$

素因数の和:7002

約数の個数: 32

約数和(自身を含む): 42021504

約数和(自身を除く): 22083614

約数列:

[1, 2, 5, 7, 10, 14, 35, 41, 70, 82, 205, 287, 410, 574, 1435, 2870, 6947, 13894, 34735, 48629, 69470, 97258, 243145, 284827, 486290, 569654, 1424135, 1993789, 2848270, 3987578, 9968945, 19937890]

約数ペア:

[(1, 19937890), (2, 9968945), (5, 3987578), (7, 2848270), (10, 1993789), (14, 1424135), (35, 569654), (41, 486290), (70, 284827), (82, 243145), (205, 97258), (287, 69470), (410, 48629), (574, 34735), (1435, 13894), (2870, 6947)]