3161000

素因数分解:

$2^3\times 5^3\times {\mathrm{29}}^1\times {\mathrm{109}}^1$

素因数の和:159

約数の個数: 64

約数和(自身を含む): 7722000

約数和(自身を除く): 4561000

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 29, 40, 50, 58, 100, 109, 116, 125, 145, 200, 218, 232, 250, 290, 436, 500, 545, 580, 725, 872, 1000, 1090, 1160, 1450, 2180, 2725, 2900, 3161, 3625, 4360, 5450, 5800, 6322, 7250, 10900, 12644, 13625, 14500, 15805, 21800, 25288, 27250, 29000, 31610, 54500, 63220, 79025, 109000, 126440, 158050, 316100, 395125, 632200, 790250, 1580500, 3161000]

約数ペア:

[(1, 3161000), (2, 1580500), (4, 790250), (5, 632200), (8, 395125), (10, 316100), (20, 158050), (25, 126440), (29, 109000), (40, 79025), (50, 63220), (58, 54500), (100, 31610), (109, 29000), (116, 27250), (125, 25288), (145, 21800), (200, 15805), (218, 14500), (232, 13625), (250, 12644), (290, 10900), (436, 7250), (500, 6322), (545, 5800), (580, 5450), (725, 4360), (872, 3625), (1000, 3161), (1090, 2900), (1160, 2725), (1450, 2180)]