1638500

素因数分解:

$2^2\times 5^3\times {\mathrm{29}}^1\times {\mathrm{113}}^1$

素因数の和:161

約数の個数: 48

約数和(自身を含む): 3734640

約数和(自身を除く): 2096140

約数列:

[1, 2, 4, 5, 10, 20, 25, 29, 50, 58, 100, 113, 116, 125, 145, 226, 250, 290, 452, 500, 565, 580, 725, 1130, 1450, 2260, 2825, 2900, 3277, 3625, 5650, 6554, 7250, 11300, 13108, 14125, 14500, 16385, 28250, 32770, 56500, 65540, 81925, 163850, 327700, 409625, 819250, 1638500]

約数ペア:

[(1, 1638500), (2, 819250), (4, 409625), (5, 327700), (10, 163850), (20, 81925), (25, 65540), (29, 56500), (50, 32770), (58, 28250), (100, 16385), (113, 14500), (116, 14125), (125, 13108), (145, 11300), (226, 7250), (250, 6554), (290, 5650), (452, 3625), (500, 3277), (565, 2900), (580, 2825), (725, 2260), (1130, 1450)]