30881720

素因数分解:

$2^3\times 5^1\times {\mathrm{197}}^1\times {\mathrm{3919}}^1$

素因数の和:4127

約数の個数: 32

約数和(自身を含む): 69854400

約数和(自身を除く): 38972680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 197, 394, 788, 985, 1576, 1970, 3919, 3940, 7838, 7880, 15676, 19595, 31352, 39190, 78380, 156760, 772043, 1544086, 3088172, 3860215, 6176344, 7720430, 15440860, 30881720]

約数ペア:

[(1, 30881720), (2, 15440860), (4, 7720430), (5, 6176344), (8, 3860215), (10, 3088172), (20, 1544086), (40, 772043), (197, 156760), (394, 78380), (788, 39190), (985, 31352), (1576, 19595), (1970, 15676), (3919, 7880), (3940, 7838)]