21153572

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{193}}^1$

素因数の和:308

約数の個数: 48

約数和(自身を含む): 42239232

約数和(自身を除く): 21085660

約数列:

[1, 2, 4, 11, 22, 44, 47, 53, 94, 106, 188, 193, 212, 386, 517, 583, 772, 1034, 1166, 2068, 2123, 2332, 2491, 4246, 4982, 8492, 9071, 9964, 10229, 18142, 20458, 27401, 36284, 40916, 54802, 99781, 109604, 112519, 199562, 225038, 399124, 450076, 480763, 961526, 1923052, 5288393, 10576786, 21153572]

約数ペア:

[(1, 21153572), (2, 10576786), (4, 5288393), (11, 1923052), (22, 961526), (44, 480763), (47, 450076), (53, 399124), (94, 225038), (106, 199562), (188, 112519), (193, 109604), (212, 99781), (386, 54802), (517, 40916), (583, 36284), (772, 27401), (1034, 20458), (1166, 18142), (2068, 10229), (2123, 9964), (2332, 9071), (2491, 8492), (4246, 4982)]