21490118

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{89}}^1\times {\mathrm{251}}^1$

素因数の和:392

約数の個数: 32

約数和(自身を含む): 36197280

約数和(自身を除く): 14707162

約数列:

[1, 2, 13, 26, 37, 74, 89, 178, 251, 481, 502, 962, 1157, 2314, 3263, 3293, 6526, 6586, 9287, 18574, 22339, 42809, 44678, 85618, 120731, 241462, 290407, 580814, 826543, 1653086, 10745059, 21490118]

約数ペア:

[(1, 21490118), (2, 10745059), (13, 1653086), (26, 826543), (37, 580814), (74, 290407), (89, 241462), (178, 120731), (251, 85618), (481, 44678), (502, 42809), (962, 22339), (1157, 18574), (2314, 9287), (3263, 6586), (3293, 6526)]