20481250

素因数分解:

$2^1\times 5^5\times {\mathrm{29}}^1\times {\mathrm{113}}^1$

素因数の和:169

約数の個数: 48

約数和(自身を含む): 40075560

約数和(自身を除く): 19594310

約数列:

[1, 2, 5, 10, 25, 29, 50, 58, 113, 125, 145, 226, 250, 290, 565, 625, 725, 1130, 1250, 1450, 2825, 3125, 3277, 3625, 5650, 6250, 6554, 7250, 14125, 16385, 18125, 28250, 32770, 36250, 70625, 81925, 90625, 141250, 163850, 181250, 353125, 409625, 706250, 819250, 2048125, 4096250, 10240625, 20481250]

約数ペア:

[(1, 20481250), (2, 10240625), (5, 4096250), (10, 2048125), (25, 819250), (29, 706250), (50, 409625), (58, 353125), (113, 181250), (125, 163850), (145, 141250), (226, 90625), (250, 81925), (290, 70625), (565, 36250), (625, 32770), (725, 28250), (1130, 18125), (1250, 16385), (1450, 14125), (2825, 7250), (3125, 6554), (3277, 6250), (3625, 5650)]