80004880

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{12659}}^1$

素因数の和:12751

約数の個数: 40

約数和(自身を含む): 188380800

約数和(自身を除く): 108375920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 158, 316, 395, 632, 790, 1264, 1580, 3160, 6320, 12659, 25318, 50636, 63295, 101272, 126590, 202544, 253180, 506360, 1000061, 1012720, 2000122, 4000244, 5000305, 8000488, 10000610, 16000976, 20001220, 40002440, 80004880]

約数ペア:

[(1, 80004880), (2, 40002440), (4, 20001220), (5, 16000976), (8, 10000610), (10, 8000488), (16, 5000305), (20, 4000244), (40, 2000122), (79, 1012720), (80, 1000061), (158, 506360), (316, 253180), (395, 202544), (632, 126590), (790, 101272), (1264, 63295), (1580, 50636), (3160, 25318), (6320, 12659)]