18695768

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{421}}^1$

素因数の和:508

約数の個数: 64

約数和(自身を含む): 43955520

約数和(自身を除く): 25259752

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 61, 91, 104, 122, 182, 244, 364, 421, 427, 488, 728, 793, 842, 854, 1586, 1684, 1708, 2947, 3172, 3368, 3416, 5473, 5551, 5894, 6344, 10946, 11102, 11788, 21892, 22204, 23576, 25681, 38311, 43784, 44408, 51362, 76622, 102724, 153244, 179767, 205448, 306488, 333853, 359534, 667706, 719068, 1335412, 1438136, 2336971, 2670824, 4673942, 9347884, 18695768]

約数ペア:

[(1, 18695768), (2, 9347884), (4, 4673942), (7, 2670824), (8, 2336971), (13, 1438136), (14, 1335412), (26, 719068), (28, 667706), (52, 359534), (56, 333853), (61, 306488), (91, 205448), (104, 179767), (122, 153244), (182, 102724), (244, 76622), (364, 51362), (421, 44408), (427, 43784), (488, 38311), (728, 25681), (793, 23576), (842, 22204), (854, 21892), (1586, 11788), (1684, 11102), (1708, 10946), (2947, 6344), (3172, 5894), (3368, 5551), (3416, 5473)]