20905488074

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{443}}^1\times {\mathrm{17491}}^1$

素因数の和:18026

約数の個数: 32

約数和(自身を含む): 33551055360

約数和(自身を除く): 12645567286

約数列:

[1, 2, 19, 38, 71, 142, 443, 886, 1349, 2698, 8417, 16834, 17491, 31453, 34982, 62906, 332329, 597607, 664658, 1195214, 1241861, 2483722, 7748513, 15497026, 23595359, 47190718, 147221747, 294443494, 550144423, 1100288846, 10452744037, 20905488074]

約数ペア:

[(1, 20905488074), (2, 10452744037), (19, 1100288846), (38, 550144423), (71, 294443494), (142, 147221747), (443, 47190718), (886, 23595359), (1349, 15497026), (2698, 7748513), (8417, 2483722), (16834, 1241861), (17491, 1195214), (31453, 664658), (34982, 597607), (62906, 332329)]