128936380

素因数分解:

$2^2\times 5^1\times {\mathrm{271}}^1\times {\mathrm{23789}}^1$

素因数の和:24069

約数の個数: 24

約数和(自身を含む): 271776960

約数和(自身を除く): 142840580

約数列:

[1, 2, 4, 5, 10, 20, 271, 542, 1084, 1355, 2710, 5420, 23789, 47578, 95156, 118945, 237890, 475780, 6446819, 12893638, 25787276, 32234095, 64468190, 128936380]

約数ペア:

[(1, 128936380), (2, 64468190), (4, 32234095), (5, 25787276), (10, 12893638), (20, 6446819), (271, 475780), (542, 237890), (1084, 118945), (1355, 95156), (2710, 47578), (5420, 23789)]