20338864

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{229}}^1$

素因数の和:318

約数の個数: 80

約数和(自身を含む): 49510720

約数和(自身を除く): 29171856

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 61, 91, 104, 112, 122, 182, 208, 229, 244, 364, 427, 458, 488, 728, 793, 854, 916, 976, 1456, 1586, 1603, 1708, 1832, 2977, 3172, 3206, 3416, 3664, 5551, 5954, 6344, 6412, 6832, 11102, 11908, 12688, 12824, 13969, 20839, 22204, 23816, 25648, 27938, 41678, 44408, 47632, 55876, 83356, 88816, 97783, 111752, 166712, 181597, 195566, 223504, 333424, 363194, 391132, 726388, 782264, 1271179, 1452776, 1564528, 2542358, 2905552, 5084716, 10169432, 20338864]

約数ペア:

[(1, 20338864), (2, 10169432), (4, 5084716), (7, 2905552), (8, 2542358), (13, 1564528), (14, 1452776), (16, 1271179), (26, 782264), (28, 726388), (52, 391132), (56, 363194), (61, 333424), (91, 223504), (104, 195566), (112, 181597), (122, 166712), (182, 111752), (208, 97783), (229, 88816), (244, 83356), (364, 55876), (427, 47632), (458, 44408), (488, 41678), (728, 27938), (793, 25648), (854, 23816), (916, 22204), (976, 20839), (1456, 13969), (1586, 12824), (1603, 12688), (1708, 11908), (1832, 11102), (2977, 6832), (3172, 6412), (3206, 6344), (3416, 5954), (3664, 5551)]