20802873

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{181}}^1\times {\mathrm{421}}^1$

素因数の和:625

約数の個数: 32

約数和(自身を含む): 34408192

約数和(自身を除く): 13605319

約数列:

[1, 3, 7, 13, 21, 39, 91, 181, 273, 421, 543, 1263, 1267, 2353, 2947, 3801, 5473, 7059, 8841, 16419, 16471, 38311, 49413, 76201, 114933, 228603, 533407, 990613, 1600221, 2971839, 6934291, 20802873]

約数ペア:

[(1, 20802873), (3, 6934291), (7, 2971839), (13, 1600221), (21, 990613), (39, 533407), (91, 228603), (181, 114933), (273, 76201), (421, 49413), (543, 38311), (1263, 16471), (1267, 16419), (2353, 8841), (2947, 7059), (3801, 5473)]