28178748

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{3169}}^1$

素因数の和:3211

約数の個数: 72

約数和(自身を含む): 80771600

約数和(自身を除く): 52592852

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 19, 26, 36, 38, 39, 52, 57, 76, 78, 114, 117, 156, 171, 228, 234, 247, 342, 468, 494, 684, 741, 988, 1482, 2223, 2964, 3169, 4446, 6338, 8892, 9507, 12676, 19014, 28521, 38028, 41197, 57042, 60211, 82394, 114084, 120422, 123591, 164788, 180633, 240844, 247182, 361266, 370773, 494364, 541899, 722532, 741546, 782743, 1083798, 1483092, 1565486, 2167596, 2348229, 3130972, 4696458, 7044687, 9392916, 14089374, 28178748]

約数ペア:

[(1, 28178748), (2, 14089374), (3, 9392916), (4, 7044687), (6, 4696458), (9, 3130972), (12, 2348229), (13, 2167596), (18, 1565486), (19, 1483092), (26, 1083798), (36, 782743), (38, 741546), (39, 722532), (52, 541899), (57, 494364), (76, 370773), (78, 361266), (114, 247182), (117, 240844), (156, 180633), (171, 164788), (228, 123591), (234, 120422), (247, 114084), (342, 82394), (468, 60211), (494, 57042), (684, 41197), (741, 38028), (988, 28521), (1482, 19014), (2223, 12676), (2964, 9507), (3169, 8892), (4446, 6338)]