28762209

素因数分解:

$3^5\times 7^1\times {\mathrm{37}}^1\times {\mathrm{457}}^1$

素因数の和:516

約数の個数: 48

約数和(自身を含む): 50680448

約数和(自身を除く): 21918239

約数列:

[1, 3, 7, 9, 21, 27, 37, 63, 81, 111, 189, 243, 259, 333, 457, 567, 777, 999, 1371, 1701, 2331, 2997, 3199, 4113, 6993, 8991, 9597, 12339, 16909, 20979, 28791, 37017, 50727, 62937, 86373, 111051, 118363, 152181, 259119, 355089, 456543, 777357, 1065267, 1369629, 3195801, 4108887, 9587403, 28762209]

約数ペア:

[(1, 28762209), (3, 9587403), (7, 4108887), (9, 3195801), (21, 1369629), (27, 1065267), (37, 777357), (63, 456543), (81, 355089), (111, 259119), (189, 152181), (243, 118363), (259, 111051), (333, 86373), (457, 62937), (567, 50727), (777, 37017), (999, 28791), (1371, 20979), (1701, 16909), (2331, 12339), (2997, 9597), (3199, 8991), (4113, 6993)]