21899216

素因数分解:

$2^4\times {\mathrm{509}}^1\times {\mathrm{2689}}^1$

素因数の和:3206

約数の個数: 20

約数和(自身を含む): 42528900

約数和(自身を除く): 20629684

約数列:

[1, 2, 4, 8, 16, 509, 1018, 2036, 2689, 4072, 5378, 8144, 10756, 21512, 43024, 1368701, 2737402, 5474804, 10949608, 21899216]

約数ペア:

[(1, 21899216), (2, 10949608), (4, 5474804), (8, 2737402), (16, 1368701), (509, 43024), (1018, 21512), (2036, 10756), (2689, 8144), (4072, 5378)]