19556000

素因数分解:

$2^5\times 5^3\times {\mathrm{4889}}^1$

素因数の和:4914

約数の個数: 48

約数和(自身を含む): 48058920

約数和(自身を除く): 28502920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 160, 200, 250, 400, 500, 800, 1000, 2000, 4000, 4889, 9778, 19556, 24445, 39112, 48890, 78224, 97780, 122225, 156448, 195560, 244450, 391120, 488900, 611125, 782240, 977800, 1222250, 1955600, 2444500, 3911200, 4889000, 9778000, 19556000]

約数ペア:

[(1, 19556000), (2, 9778000), (4, 4889000), (5, 3911200), (8, 2444500), (10, 1955600), (16, 1222250), (20, 977800), (25, 782240), (32, 611125), (40, 488900), (50, 391120), (80, 244450), (100, 195560), (125, 156448), (160, 122225), (200, 97780), (250, 78224), (400, 48890), (500, 39112), (800, 24445), (1000, 19556), (2000, 9778), (4000, 4889)]