25444520

素因数分解:

$2^3\times 5^1\times {\mathrm{197}}^1\times {\mathrm{3229}}^1$

素因数の和:3437

約数の個数: 32

約数和(自身を含む): 57558600

約数和(自身を除く): 32114080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 197, 394, 788, 985, 1576, 1970, 3229, 3940, 6458, 7880, 12916, 16145, 25832, 32290, 64580, 129160, 636113, 1272226, 2544452, 3180565, 5088904, 6361130, 12722260, 25444520]

約数ペア:

[(1, 25444520), (2, 12722260), (4, 6361130), (5, 5088904), (8, 3180565), (10, 2544452), (20, 1272226), (40, 636113), (197, 129160), (394, 64580), (788, 32290), (985, 25832), (1576, 16145), (1970, 12916), (3229, 7880), (3940, 6458)]