21020636

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1$

素因数の和:163

約数の個数: 96

約数和(自身を含む): 49674240

約数和(自身を除く): 28653604

約数列:

[1, 2, 4, 7, 13, 14, 17, 26, 28, 34, 43, 52, 68, 79, 86, 91, 119, 158, 172, 182, 221, 238, 301, 316, 364, 442, 476, 553, 559, 602, 731, 884, 1027, 1106, 1118, 1204, 1343, 1462, 1547, 2054, 2212, 2236, 2686, 2924, 3094, 3397, 3913, 4108, 5117, 5372, 6188, 6794, 7189, 7826, 9401, 9503, 10234, 13588, 14378, 15652, 17459, 18802, 19006, 20468, 23779, 28756, 34918, 37604, 38012, 44161, 47558, 57749, 66521, 69836, 88322, 95116, 115498, 122213, 133042, 176644, 230996, 244426, 266084, 309127, 404243, 488852, 618254, 750737, 808486, 1236508, 1501474, 1616972, 3002948, 5255159, 10510318, 21020636]

約数ペア:

[(1, 21020636), (2, 10510318), (4, 5255159), (7, 3002948), (13, 1616972), (14, 1501474), (17, 1236508), (26, 808486), (28, 750737), (34, 618254), (43, 488852), (52, 404243), (68, 309127), (79, 266084), (86, 244426), (91, 230996), (119, 176644), (158, 133042), (172, 122213), (182, 115498), (221, 95116), (238, 88322), (301, 69836), (316, 66521), (364, 57749), (442, 47558), (476, 44161), (553, 38012), (559, 37604), (602, 34918), (731, 28756), (884, 23779), (1027, 20468), (1106, 19006), (1118, 18802), (1204, 17459), (1343, 15652), (1462, 14378), (1547, 13588), (2054, 10234), (2212, 9503), (2236, 9401), (2686, 7826), (2924, 7189), (3094, 6794), (3397, 6188), (3913, 5372), (4108, 5117)]