20555856

素因数分解:

$2^4\times 3^5\times {\mathrm{17}}^1\times {\mathrm{311}}^1$

素因数の和:351

約数の個数: 120

約数和(自身を含む): 63370944

約数和(自身を除く): 42815088

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 17, 18, 24, 27, 34, 36, 48, 51, 54, 68, 72, 81, 102, 108, 136, 144, 153, 162, 204, 216, 243, 272, 306, 311, 324, 408, 432, 459, 486, 612, 622, 648, 816, 918, 933, 972, 1224, 1244, 1296, 1377, 1836, 1866, 1944, 2448, 2488, 2754, 2799, 3672, 3732, 3888, 4131, 4976, 5287, 5508, 5598, 7344, 7464, 8262, 8397, 10574, 11016, 11196, 14928, 15861, 16524, 16794, 21148, 22032, 22392, 25191, 31722, 33048, 33588, 42296, 44784, 47583, 50382, 63444, 66096, 67176, 75573, 84592, 95166, 100764, 126888, 134352, 142749, 151146, 190332, 201528, 253776, 285498, 302292, 380664, 403056, 428247, 570996, 604584, 761328, 856494, 1141992, 1209168, 1284741, 1712988, 2283984, 2569482, 3425976, 5138964, 6851952, 10277928, 20555856]

約数ペア:

[(1, 20555856), (2, 10277928), (3, 6851952), (4, 5138964), (6, 3425976), (8, 2569482), (9, 2283984), (12, 1712988), (16, 1284741), (17, 1209168), (18, 1141992), (24, 856494), (27, 761328), (34, 604584), (36, 570996), (48, 428247), (51, 403056), (54, 380664), (68, 302292), (72, 285498), (81, 253776), (102, 201528), (108, 190332), (136, 151146), (144, 142749), (153, 134352), (162, 126888), (204, 100764), (216, 95166), (243, 84592), (272, 75573), (306, 67176), (311, 66096), (324, 63444), (408, 50382), (432, 47583), (459, 44784), (486, 42296), (612, 33588), (622, 33048), (648, 31722), (816, 25191), (918, 22392), (933, 22032), (972, 21148), (1224, 16794), (1244, 16524), (1296, 15861), (1377, 14928), (1836, 11196), (1866, 11016), (1944, 10574), (2448, 8397), (2488, 8262), (2754, 7464), (2799, 7344), (3672, 5598), (3732, 5508), (3888, 5287), (4131, 4976)]