4487000

素因数分解:

$2^3\times 5^3\times 7^1\times {\mathrm{641}}^1$

素因数の和:669

約数の個数: 64

約数和(自身を含む): 12018240

約数和(自身を除く): 7531240

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 35, 40, 50, 56, 70, 100, 125, 140, 175, 200, 250, 280, 350, 500, 641, 700, 875, 1000, 1282, 1400, 1750, 2564, 3205, 3500, 4487, 5128, 6410, 7000, 8974, 12820, 16025, 17948, 22435, 25640, 32050, 35896, 44870, 64100, 80125, 89740, 112175, 128200, 160250, 179480, 224350, 320500, 448700, 560875, 641000, 897400, 1121750, 2243500, 4487000]

約数ペア:

[(1, 4487000), (2, 2243500), (4, 1121750), (5, 897400), (7, 641000), (8, 560875), (10, 448700), (14, 320500), (20, 224350), (25, 179480), (28, 160250), (35, 128200), (40, 112175), (50, 89740), (56, 80125), (70, 64100), (100, 44870), (125, 35896), (140, 32050), (175, 25640), (200, 22435), (250, 17948), (280, 16025), (350, 12820), (500, 8974), (641, 7000), (700, 6410), (875, 5128), (1000, 4487), (1282, 3500), (1400, 3205), (1750, 2564)]