489500

素因数分解:

$2^2\times 5^3\times {\mathrm{11}}^1\times {\mathrm{89}}^1$

素因数の和:119

約数の個数: 48

約数和(自身を含む): 1179360

約数和(自身を除く): 689860

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 89, 100, 110, 125, 178, 220, 250, 275, 356, 445, 500, 550, 890, 979, 1100, 1375, 1780, 1958, 2225, 2750, 3916, 4450, 4895, 5500, 8900, 9790, 11125, 19580, 22250, 24475, 44500, 48950, 97900, 122375, 244750, 489500]

約数ペア:

[(1, 489500), (2, 244750), (4, 122375), (5, 97900), (10, 48950), (11, 44500), (20, 24475), (22, 22250), (25, 19580), (44, 11125), (50, 9790), (55, 8900), (89, 5500), (100, 4895), (110, 4450), (125, 3916), (178, 2750), (220, 2225), (250, 1958), (275, 1780), (356, 1375), (445, 1100), (500, 979), (550, 890)]