20789005

素因数分解:

$5^1\times {\mathrm{37}}^1\times {\mathrm{103}}^1\times {\mathrm{1091}}^1$

素因数の和:1236

約数の個数: 16

約数和(自身を含む): 25893504

約数和(自身を除く): 5104499

約数列:

[1, 5, 37, 103, 185, 515, 1091, 3811, 5455, 19055, 40367, 112373, 201835, 561865, 4157801, 20789005]

約数ペア:

[(1, 20789005), (5, 4157801), (37, 561865), (103, 201835), (185, 112373), (515, 40367), (1091, 19055), (3811, 5455)]