25590920

素因数分解:

$2^3\times 5^1\times {\mathrm{491}}^1\times {\mathrm{1303}}^1$

素因数の和:1805

約数の個数: 32

約数和(自身を含む): 57741120

約数和(自身を除く): 32150200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 491, 982, 1303, 1964, 2455, 2606, 3928, 4910, 5212, 6515, 9820, 10424, 13030, 19640, 26060, 52120, 639773, 1279546, 2559092, 3198865, 5118184, 6397730, 12795460, 25590920]

約数ペア:

[(1, 25590920), (2, 12795460), (4, 6397730), (5, 5118184), (8, 3198865), (10, 2559092), (20, 1279546), (40, 639773), (491, 52120), (982, 26060), (1303, 19640), (1964, 13030), (2455, 10424), (2606, 9820), (3928, 6515), (4910, 5212)]