20128888

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{5231}}^1$

素因数の和:5287

約数の個数: 32

約数和(自身を含む): 41751360

約数和(自身を除く): 21622472

約数列:

[1, 2, 4, 8, 13, 26, 37, 52, 74, 104, 148, 296, 481, 962, 1924, 3848, 5231, 10462, 20924, 41848, 68003, 136006, 193547, 272012, 387094, 544024, 774188, 1548376, 2516111, 5032222, 10064444, 20128888]

約数ペア:

[(1, 20128888), (2, 10064444), (4, 5032222), (8, 2516111), (13, 1548376), (26, 774188), (37, 544024), (52, 387094), (74, 272012), (104, 193547), (148, 136006), (296, 68003), (481, 41848), (962, 20924), (1924, 10462), (3848, 5231)]