388558840

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{89119}}^1$

素因数の和:89239

約数の個数: 32

約数和(自身を含む): 882288000

約数和(自身を除く): 493729160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 4360, 89119, 178238, 356476, 445595, 712952, 891190, 1782380, 3564760, 9713971, 19427942, 38855884, 48569855, 77711768, 97139710, 194279420, 388558840]

約数ペア:

[(1, 388558840), (2, 194279420), (4, 97139710), (5, 77711768), (8, 48569855), (10, 38855884), (20, 19427942), (40, 9713971), (109, 3564760), (218, 1782380), (436, 891190), (545, 712952), (872, 445595), (1090, 356476), (2180, 178238), (4360, 89119)]