17963988

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{137}}^1\times {\mathrm{223}}^1$

素因数の和:381

約数の個数: 72

約数和(自身を含む): 49335552

約数和(自身を除く): 31371564

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 49, 84, 98, 137, 147, 196, 223, 274, 294, 411, 446, 548, 588, 669, 822, 892, 959, 1338, 1561, 1644, 1918, 2676, 2877, 3122, 3836, 4683, 5754, 6244, 6713, 9366, 10927, 11508, 13426, 18732, 20139, 21854, 26852, 30551, 32781, 40278, 43708, 61102, 65562, 80556, 91653, 122204, 131124, 183306, 213857, 366612, 427714, 641571, 855428, 1283142, 1496999, 2566284, 2993998, 4490997, 5987996, 8981994, 17963988]

約数ペア:

[(1, 17963988), (2, 8981994), (3, 5987996), (4, 4490997), (6, 2993998), (7, 2566284), (12, 1496999), (14, 1283142), (21, 855428), (28, 641571), (42, 427714), (49, 366612), (84, 213857), (98, 183306), (137, 131124), (147, 122204), (196, 91653), (223, 80556), (274, 65562), (294, 61102), (411, 43708), (446, 40278), (548, 32781), (588, 30551), (669, 26852), (822, 21854), (892, 20139), (959, 18732), (1338, 13426), (1561, 11508), (1644, 10927), (1918, 9366), (2676, 6713), (2877, 6244), (3122, 5754), (3836, 4683)]