20966695

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{109}}^1$

素因数の和:235

約数の個数: 32

約数和(自身を含む): 28131840

約数和(自身を除く): 7165145

約数列:

[1, 5, 17, 31, 73, 85, 109, 155, 365, 527, 545, 1241, 1853, 2263, 2635, 3379, 6205, 7957, 9265, 11315, 16895, 38471, 39785, 57443, 135269, 192355, 246667, 287215, 676345, 1233335, 4193339, 20966695]

約数ペア:

[(1, 20966695), (5, 4193339), (17, 1233335), (31, 676345), (73, 287215), (85, 246667), (109, 192355), (155, 135269), (365, 57443), (527, 39785), (545, 38471), (1241, 16895), (1853, 11315), (2263, 9265), (2635, 7957), (3379, 6205)]