90438080

素因数分解:

$2^6\times 5^1\times {\mathrm{409}}^1\times {\mathrm{691}}^1$

素因数の和:1117

約数の個数: 56

約数和(自身を含む): 216194640

約数和(自身を除く): 125756560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 409, 691, 818, 1382, 1636, 2045, 2764, 3272, 3455, 4090, 5528, 6544, 6910, 8180, 11056, 13088, 13820, 16360, 22112, 26176, 27640, 32720, 44224, 55280, 65440, 110560, 130880, 221120, 282619, 565238, 1130476, 1413095, 2260952, 2826190, 4521904, 5652380, 9043808, 11304760, 18087616, 22609520, 45219040, 90438080]

約数ペア:

[(1, 90438080), (2, 45219040), (4, 22609520), (5, 18087616), (8, 11304760), (10, 9043808), (16, 5652380), (20, 4521904), (32, 2826190), (40, 2260952), (64, 1413095), (80, 1130476), (160, 565238), (320, 282619), (409, 221120), (691, 130880), (818, 110560), (1382, 65440), (1636, 55280), (2045, 44224), (2764, 32720), (3272, 27640), (3455, 26176), (4090, 22112), (5528, 16360), (6544, 13820), (6910, 13088), (8180, 11056)]