20746418

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{37}}^1\times {\mathrm{331}}^1$

素因数の和:399

約数の個数: 48

約数和(自身を含む): 40270272

約数和(自身を除く): 19523854

約数列:

[1, 2, 7, 11, 14, 22, 37, 74, 77, 121, 154, 242, 259, 331, 407, 518, 662, 814, 847, 1694, 2317, 2849, 3641, 4477, 4634, 5698, 7282, 8954, 12247, 24494, 25487, 31339, 40051, 50974, 62678, 80102, 85729, 134717, 171458, 269434, 280357, 560714, 943019, 1481887, 1886038, 2963774, 10373209, 20746418]

約数ペア:

[(1, 20746418), (2, 10373209), (7, 2963774), (11, 1886038), (14, 1481887), (22, 943019), (37, 560714), (74, 280357), (77, 269434), (121, 171458), (154, 134717), (242, 85729), (259, 80102), (331, 62678), (407, 50974), (518, 40051), (662, 31339), (814, 25487), (847, 24494), (1694, 12247), (2317, 8954), (2849, 7282), (3641, 5698), (4477, 4634)]