28680250

素因数分解:

$2^1\times 5^3\times {\mathrm{89}}^1\times {\mathrm{1289}}^1$

素因数の和:1395

約数の個数: 32

約数和(自身を含む): 54334800

約数和(自身を除く): 25654550

約数列:

[1, 2, 5, 10, 25, 50, 89, 125, 178, 250, 445, 890, 1289, 2225, 2578, 4450, 6445, 11125, 12890, 22250, 32225, 64450, 114721, 161125, 229442, 322250, 573605, 1147210, 2868025, 5736050, 14340125, 28680250]

約数ペア:

[(1, 28680250), (2, 14340125), (5, 5736050), (10, 2868025), (25, 1147210), (50, 573605), (89, 322250), (125, 229442), (178, 161125), (250, 114721), (445, 64450), (890, 32225), (1289, 22250), (2225, 12890), (2578, 11125), (4450, 6445)]