30991900

素因数分解:

$2^2\times 5^2\times {\mathrm{41}}^1\times {\mathrm{7559}}^1$

素因数の和:7614

約数の個数: 36

約数和(自身を含む): 68901840

約数和(自身を除く): 37909940

約数列:

[1, 2, 4, 5, 10, 20, 25, 41, 50, 82, 100, 164, 205, 410, 820, 1025, 2050, 4100, 7559, 15118, 30236, 37795, 75590, 151180, 188975, 309919, 377950, 619838, 755900, 1239676, 1549595, 3099190, 6198380, 7747975, 15495950, 30991900]

約数ペア:

[(1, 30991900), (2, 15495950), (4, 7747975), (5, 6198380), (10, 3099190), (20, 1549595), (25, 1239676), (41, 755900), (50, 619838), (82, 377950), (100, 309919), (164, 188975), (205, 151180), (410, 75590), (820, 37795), (1025, 30236), (2050, 15118), (4100, 7559)]