20698750

素因数分解:

$2^1\times 5^4\times {\mathrm{29}}^1\times {\mathrm{571}}^1$

素因数の和:622

約数の個数: 40

約数和(自身を含む): 40205880

約数和(自身を除く): 19507130

約数列:

[1, 2, 5, 10, 25, 29, 50, 58, 125, 145, 250, 290, 571, 625, 725, 1142, 1250, 1450, 2855, 3625, 5710, 7250, 14275, 16559, 18125, 28550, 33118, 36250, 71375, 82795, 142750, 165590, 356875, 413975, 713750, 827950, 2069875, 4139750, 10349375, 20698750]

約数ペア:

[(1, 20698750), (2, 10349375), (5, 4139750), (10, 2069875), (25, 827950), (29, 713750), (50, 413975), (58, 356875), (125, 165590), (145, 142750), (250, 82795), (290, 71375), (571, 36250), (625, 33118), (725, 28550), (1142, 18125), (1250, 16559), (1450, 14275), (2855, 7250), (3625, 5710)]