25239640

素因数分解:

$2^3\times 5^1\times {\mathrm{197}}^1\times {\mathrm{3203}}^1$

素因数の和:3411

約数の個数: 32

約数和(自身を含む): 57095280

約数和(自身を除く): 31855640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 197, 394, 788, 985, 1576, 1970, 3203, 3940, 6406, 7880, 12812, 16015, 25624, 32030, 64060, 128120, 630991, 1261982, 2523964, 3154955, 5047928, 6309910, 12619820, 25239640]

約数ペア:

[(1, 25239640), (2, 12619820), (4, 6309910), (5, 5047928), (8, 3154955), (10, 2523964), (20, 1261982), (40, 630991), (197, 128120), (394, 64060), (788, 32030), (985, 25624), (1576, 16015), (1970, 12812), (3203, 7880), (3940, 6406)]