80280400

素因数分解:

$2^4\times 5^2\times {\mathrm{419}}^1\times {\mathrm{479}}^1$

素因数の和:916

約数の個数: 60

約数和(自身を含む): 193737600

約数和(自身を除く): 113457200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 419, 479, 838, 958, 1676, 1916, 2095, 2395, 3352, 3832, 4190, 4790, 6704, 7664, 8380, 9580, 10475, 11975, 16760, 19160, 20950, 23950, 33520, 38320, 41900, 47900, 83800, 95800, 167600, 191600, 200701, 401402, 802804, 1003505, 1605608, 2007010, 3211216, 4014020, 5017525, 8028040, 10035050, 16056080, 20070100, 40140200, 80280400]

約数ペア:

[(1, 80280400), (2, 40140200), (4, 20070100), (5, 16056080), (8, 10035050), (10, 8028040), (16, 5017525), (20, 4014020), (25, 3211216), (40, 2007010), (50, 1605608), (80, 1003505), (100, 802804), (200, 401402), (400, 200701), (419, 191600), (479, 167600), (838, 95800), (958, 83800), (1676, 47900), (1916, 41900), (2095, 38320), (2395, 33520), (3352, 23950), (3832, 20950), (4190, 19160), (4790, 16760), (6704, 11975), (7664, 10475), (8380, 9580)]