1242880

素因数分解:

$2^8\times 5^1\times {\mathrm{971}}^1$

素因数の和:992

約数の個数: 36

約数和(自身を含む): 2980152

約数和(自身を除く): 1737272

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 971, 1280, 1942, 3884, 4855, 7768, 9710, 15536, 19420, 31072, 38840, 62144, 77680, 124288, 155360, 248576, 310720, 621440, 1242880]

約数ペア:

[(1, 1242880), (2, 621440), (4, 310720), (5, 248576), (8, 155360), (10, 124288), (16, 77680), (20, 62144), (32, 38840), (40, 31072), (64, 19420), (80, 15536), (128, 9710), (160, 7768), (256, 4855), (320, 3884), (640, 1942), (971, 1280)]