28985500

素因数分解:

$2^2\times 5^3\times {\mathrm{29}}^1\times {\mathrm{1999}}^1$

素因数の和:2047

約数の個数: 48

約数和(自身を含む): 65520000

約数和(自身を除く): 36534500

約数列:

[1, 2, 4, 5, 10, 20, 25, 29, 50, 58, 100, 116, 125, 145, 250, 290, 500, 580, 725, 1450, 1999, 2900, 3625, 3998, 7250, 7996, 9995, 14500, 19990, 39980, 49975, 57971, 99950, 115942, 199900, 231884, 249875, 289855, 499750, 579710, 999500, 1159420, 1449275, 2898550, 5797100, 7246375, 14492750, 28985500]

約数ペア:

[(1, 28985500), (2, 14492750), (4, 7246375), (5, 5797100), (10, 2898550), (20, 1449275), (25, 1159420), (29, 999500), (50, 579710), (58, 499750), (100, 289855), (116, 249875), (125, 231884), (145, 199900), (250, 115942), (290, 99950), (500, 57971), (580, 49975), (725, 39980), (1450, 19990), (1999, 14500), (2900, 9995), (3625, 7996), (3998, 7250)]