21764000

素因数分解:

$2^5\times 5^3\times {\mathrm{5441}}^1$

素因数の和:5466

約数の個数: 48

約数和(自身を含む): 53483976

約数和(自身を除く): 31719976

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, 5441, 10882, 21764, 27205, 43528, 54410, 87056, 108820, 136025, 174112, 217640, 272050, 435280, 544100, 680125, 870560, 1088200, 1360250, 2176400, 2720500, 4352800, 5441000, 10882000, 21764000]

約数ペア:

[(1, 21764000), (2, 10882000), (4, 5441000), (5, 4352800), (8, 2720500), (10, 2176400), (16, 1360250), (20, 1088200), (25, 870560), (32, 680125), (40, 544100), (50, 435280), (80, 272050), (100, 217640), (125, 174112), (160, 136025), (200, 108820), (250, 87056), (400, 54410), (500, 43528), (800, 27205), (1000, 21764), (2000, 10882), (4000, 5441)]