19444000

素因数分解:

$2^5\times 5^3\times {\mathrm{4861}}^1$

素因数の和:4886

約数の個数: 48

約数和(自身を含む): 47783736

約数和(自身を除く): 28339736

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, 4861, 9722, 19444, 24305, 38888, 48610, 77776, 97220, 121525, 155552, 194440, 243050, 388880, 486100, 607625, 777760, 972200, 1215250, 1944400, 2430500, 3888800, 4861000, 9722000, 19444000]

約数ペア:

[(1, 19444000), (2, 9722000), (4, 4861000), (5, 3888800), (8, 2430500), (10, 1944400), (16, 1215250), (20, 972200), (25, 777760), (32, 607625), (40, 486100), (50, 388880), (80, 243050), (100, 194440), (125, 155552), (160, 121525), (200, 97220), (250, 77776), (400, 48610), (500, 38888), (800, 24305), (1000, 19444), (2000, 9722), (4000, 4861)]