21749140

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{22193}}^1$

素因数の和:22216

約数の個数: 36

約数和(自身を含む): 53132436

約数和(自身を除く): 31383296

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 22193, 44386, 88772, 110965, 155351, 221930, 310702, 443860, 621404, 776755, 1087457, 1553510, 2174914, 3107020, 4349828, 5437285, 10874570, 21749140]

約数ペア:

[(1, 21749140), (2, 10874570), (4, 5437285), (5, 4349828), (7, 3107020), (10, 2174914), (14, 1553510), (20, 1087457), (28, 776755), (35, 621404), (49, 443860), (70, 310702), (98, 221930), (140, 155351), (196, 110965), (245, 88772), (490, 44386), (980, 22193)]