278750

素因数分解:

$2^1\times 5^4\times {\mathrm{223}}^1$

素因数の和:245

約数の個数: 20

約数和(自身を含む): 524832

約数和(自身を除く): 246082

約数列:

[1, 2, 5, 10, 25, 50, 125, 223, 250, 446, 625, 1115, 1250, 2230, 5575, 11150, 27875, 55750, 139375, 278750]

約数ペア:

[(1, 278750), (2, 139375), (5, 55750), (10, 27875), (25, 11150), (50, 5575), (125, 2230), (223, 1250), (250, 1115), (446, 625)]