21710948

素因数分解:

$2^2\times 7^1\times {\mathrm{67}}^1\times {\mathrm{71}}^1\times {\mathrm{163}}^1$

素因数の和:312

約数の個数: 48

約数和(自身を含む): 44964864

約数和(自身を除く): 23253916

約数列:

[1, 2, 4, 7, 14, 28, 67, 71, 134, 142, 163, 268, 284, 326, 469, 497, 652, 938, 994, 1141, 1876, 1988, 2282, 4564, 4757, 9514, 10921, 11573, 19028, 21842, 23146, 33299, 43684, 46292, 66598, 76447, 81011, 133196, 152894, 162022, 305788, 324044, 775391, 1550782, 3101564, 5427737, 10855474, 21710948]

約数ペア:

[(1, 21710948), (2, 10855474), (4, 5427737), (7, 3101564), (14, 1550782), (28, 775391), (67, 324044), (71, 305788), (134, 162022), (142, 152894), (163, 133196), (268, 81011), (284, 76447), (326, 66598), (469, 46292), (497, 43684), (652, 33299), (938, 23146), (994, 21842), (1141, 19028), (1876, 11573), (1988, 10921), (2282, 9514), (4564, 4757)]