20978544

素因数分解:

$2^4\times 3^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{547}}^1$

素因数の和:622

約数の個数: 80

約数和(自身を含む): 58710528

約数和(自身を除く): 37731984

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 17, 24, 34, 47, 48, 51, 68, 94, 102, 136, 141, 188, 204, 272, 282, 376, 408, 547, 564, 752, 799, 816, 1094, 1128, 1598, 1641, 2188, 2256, 2397, 3196, 3282, 4376, 4794, 6392, 6564, 8752, 9299, 9588, 12784, 13128, 18598, 19176, 25709, 26256, 27897, 37196, 38352, 51418, 55794, 74392, 77127, 102836, 111588, 148784, 154254, 205672, 223176, 308508, 411344, 437053, 446352, 617016, 874106, 1234032, 1311159, 1748212, 2622318, 3496424, 5244636, 6992848, 10489272, 20978544]

約数ペア:

[(1, 20978544), (2, 10489272), (3, 6992848), (4, 5244636), (6, 3496424), (8, 2622318), (12, 1748212), (16, 1311159), (17, 1234032), (24, 874106), (34, 617016), (47, 446352), (48, 437053), (51, 411344), (68, 308508), (94, 223176), (102, 205672), (136, 154254), (141, 148784), (188, 111588), (204, 102836), (272, 77127), (282, 74392), (376, 55794), (408, 51418), (547, 38352), (564, 37196), (752, 27897), (799, 26256), (816, 25709), (1094, 19176), (1128, 18598), (1598, 13128), (1641, 12784), (2188, 9588), (2256, 9299), (2397, 8752), (3196, 6564), (3282, 6392), (4376, 4794)]