1380500

素因数分解:

$2^2\times 5^3\times {\mathrm{11}}^1\times {\mathrm{251}}^1$

素因数の和:281

約数の個数: 48

約数和(自身を含む): 3302208

約数和(自身を除く): 1921708

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 110, 125, 220, 250, 251, 275, 500, 502, 550, 1004, 1100, 1255, 1375, 2510, 2750, 2761, 5020, 5500, 5522, 6275, 11044, 12550, 13805, 25100, 27610, 31375, 55220, 62750, 69025, 125500, 138050, 276100, 345125, 690250, 1380500]

約数ペア:

[(1, 1380500), (2, 690250), (4, 345125), (5, 276100), (10, 138050), (11, 125500), (20, 69025), (22, 62750), (25, 55220), (44, 31375), (50, 27610), (55, 25100), (100, 13805), (110, 12550), (125, 11044), (220, 6275), (250, 5522), (251, 5500), (275, 5020), (500, 2761), (502, 2750), (550, 2510), (1004, 1375), (1100, 1255)]