81381250

素因数分解:

$2^1\times 5^5\times {\mathrm{29}}^1\times {\mathrm{449}}^1$

素因数の和:505

約数の個数: 48

約数和(自身を含む): 158193000

約数和(自身を除く): 76811750

約数列:

[1, 2, 5, 10, 25, 29, 50, 58, 125, 145, 250, 290, 449, 625, 725, 898, 1250, 1450, 2245, 3125, 3625, 4490, 6250, 7250, 11225, 13021, 18125, 22450, 26042, 36250, 56125, 65105, 90625, 112250, 130210, 181250, 280625, 325525, 561250, 651050, 1403125, 1627625, 2806250, 3255250, 8138125, 16276250, 40690625, 81381250]

約数ペア:

[(1, 81381250), (2, 40690625), (5, 16276250), (10, 8138125), (25, 3255250), (29, 2806250), (50, 1627625), (58, 1403125), (125, 651050), (145, 561250), (250, 325525), (290, 280625), (449, 181250), (625, 130210), (725, 112250), (898, 90625), (1250, 65105), (1450, 56125), (2245, 36250), (3125, 26042), (3625, 22450), (4490, 18125), (6250, 13021), (7250, 11225)]