128972260

素因数分解:

$2^2\times 5^1\times {\mathrm{1427}}^1\times {\mathrm{4519}}^1$

素因数の和:5955

約数の個数: 24

約数和(自身を含む): 271091520

約数和(自身を除く): 142119260

約数列:

[1, 2, 4, 5, 10, 20, 1427, 2854, 4519, 5708, 7135, 9038, 14270, 18076, 22595, 28540, 45190, 90380, 6448613, 12897226, 25794452, 32243065, 64486130, 128972260]

約数ペア:

[(1, 128972260), (2, 64486130), (4, 32243065), (5, 25794452), (10, 12897226), (20, 6448613), (1427, 90380), (2854, 45190), (4519, 28540), (5708, 22595), (7135, 18076), (9038, 14270)]