20559539

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1$

素因数の和:120

約数の個数: 64

約数和(自身を含む): 30965760

約数和(自身を除く): 10406221

約数列:

[1, 7, 11, 13, 19, 23, 47, 77, 91, 133, 143, 161, 209, 247, 253, 299, 329, 437, 517, 611, 893, 1001, 1081, 1463, 1729, 1771, 2093, 2717, 3059, 3289, 3619, 4277, 4807, 5681, 6251, 6721, 7567, 9823, 11609, 11891, 14053, 19019, 20539, 23023, 33649, 39767, 47047, 62491, 68761, 81263, 83237, 98371, 127699, 143773, 154583, 225929, 267007, 437437, 893893, 1082081, 1581503, 1869049, 2937077, 20559539]

約数ペア:

[(1, 20559539), (7, 2937077), (11, 1869049), (13, 1581503), (19, 1082081), (23, 893893), (47, 437437), (77, 267007), (91, 225929), (133, 154583), (143, 143773), (161, 127699), (209, 98371), (247, 83237), (253, 81263), (299, 68761), (329, 62491), (437, 47047), (517, 39767), (611, 33649), (893, 23023), (1001, 20539), (1081, 19019), (1463, 14053), (1729, 11891), (1771, 11609), (2093, 9823), (2717, 7567), (3059, 6721), (3289, 6251), (3619, 5681), (4277, 4807)]