79968800

素因数分解:

$2^5\times 5^2\times {\mathrm{99961}}^1$

素因数の和:99981

約数の個数: 36

約数和(自身を含む): 195225786

約数和(自身を除く): 115256986

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 160, 200, 400, 800, 99961, 199922, 399844, 499805, 799688, 999610, 1599376, 1999220, 2499025, 3198752, 3998440, 4998050, 7996880, 9996100, 15993760, 19992200, 39984400, 79968800]

約数ペア:

[(1, 79968800), (2, 39984400), (4, 19992200), (5, 15993760), (8, 9996100), (10, 7996880), (16, 4998050), (20, 3998440), (25, 3198752), (32, 2499025), (40, 1999220), (50, 1599376), (80, 999610), (100, 799688), (160, 499805), (200, 399844), (400, 199922), (800, 99961)]