21819714

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{739}}^1$

素因数の和:807

約数の個数: 64

約数和(自身を含む): 53990400

約数和(自身を除く): 32170686

約数列:

[1, 2, 3, 6, 7, 14, 19, 21, 37, 38, 42, 57, 74, 111, 114, 133, 222, 259, 266, 399, 518, 703, 739, 777, 798, 1406, 1478, 1554, 2109, 2217, 4218, 4434, 4921, 5173, 9842, 10346, 14041, 14763, 15519, 27343, 28082, 29526, 31038, 42123, 54686, 82029, 84246, 98287, 164058, 191401, 196574, 294861, 382802, 519517, 574203, 589722, 1039034, 1148406, 1558551, 3117102, 3636619, 7273238, 10909857, 21819714]

約数ペア:

[(1, 21819714), (2, 10909857), (3, 7273238), (6, 3636619), (7, 3117102), (14, 1558551), (19, 1148406), (21, 1039034), (37, 589722), (38, 574203), (42, 519517), (57, 382802), (74, 294861), (111, 196574), (114, 191401), (133, 164058), (222, 98287), (259, 84246), (266, 82029), (399, 54686), (518, 42123), (703, 31038), (739, 29526), (777, 28082), (798, 27343), (1406, 15519), (1478, 14763), (1554, 14041), (2109, 10346), (2217, 9842), (4218, 5173), (4434, 4921)]