20978655551

素因数分解:

$7^1\times {\mathrm{251}}^1\times {\mathrm{293}}^1\times {\mathrm{40751}}^1$

素因数の和:41302

約数の個数: 16

約数和(自身を含む): 24153873408

約数和(自身を除く): 3175217857

約数列:

[1, 7, 251, 293, 1757, 2051, 40751, 73543, 285257, 514801, 10228501, 11940043, 71599507, 83580301, 2996950793, 20978655551]

約数ペア:

[(1, 20978655551), (7, 2996950793), (251, 83580301), (293, 71599507), (1757, 11940043), (2051, 10228501), (40751, 514801), (73543, 285257)]