1286697620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{25121}}^1$

素因数の和:25340

約数の個数: 48

約数和(自身を含む): 2924803728

約数和(自身を除く): 1638106108

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 197, 260, 394, 788, 985, 1970, 2561, 3940, 5122, 10244, 12805, 25121, 25610, 50242, 51220, 100484, 125605, 251210, 326573, 502420, 653146, 1306292, 1632865, 3265730, 4948837, 6531460, 9897674, 19795348, 24744185, 49488370, 64334881, 98976740, 128669762, 257339524, 321674405, 643348810, 1286697620]

約数ペア:

[(1, 1286697620), (2, 643348810), (4, 321674405), (5, 257339524), (10, 128669762), (13, 98976740), (20, 64334881), (26, 49488370), (52, 24744185), (65, 19795348), (130, 9897674), (197, 6531460), (260, 4948837), (394, 3265730), (788, 1632865), (985, 1306292), (1970, 653146), (2561, 502420), (3940, 326573), (5122, 251210), (10244, 125605), (12805, 100484), (25121, 51220), (25610, 50242)]