28987900

素因数分解:

$2^2\times 5^2\times {\mathrm{227}}^1\times {\mathrm{1277}}^1$

素因数の和:1518

約数の個数: 36

約数和(自身を含む): 63230328

約数和(自身を除く): 34242428

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 227, 454, 908, 1135, 1277, 2270, 2554, 4540, 5108, 5675, 6385, 11350, 12770, 22700, 25540, 31925, 63850, 127700, 289879, 579758, 1159516, 1449395, 2898790, 5797580, 7246975, 14493950, 28987900]

約数ペア:

[(1, 28987900), (2, 14493950), (4, 7246975), (5, 5797580), (10, 2898790), (20, 1449395), (25, 1159516), (50, 579758), (100, 289879), (227, 127700), (454, 63850), (908, 31925), (1135, 25540), (1277, 22700), (2270, 12770), (2554, 11350), (4540, 6385), (5108, 5675)]