21393785

素因数分解:

$5^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{4813}}^1$

素因数の和:4952

約数の個数: 16

約数和(自身を含む): 29577216

約数和(自身を除く): 8183431

約数列:

[1, 5, 7, 35, 127, 635, 889, 4445, 4813, 24065, 33691, 168455, 611251, 3056255, 4278757, 21393785]

約数ペア:

[(1, 21393785), (5, 4278757), (7, 3056255), (35, 611251), (127, 168455), (635, 33691), (889, 24065), (4445, 4813)]