20111728

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{727}}^1$

素因数の和:774

約数の個数: 80

約数和(自身を含む): 50552320

約数和(自身を除く): 30440592

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 19, 26, 28, 38, 52, 56, 76, 91, 104, 112, 133, 152, 182, 208, 247, 266, 304, 364, 494, 532, 727, 728, 988, 1064, 1454, 1456, 1729, 1976, 2128, 2908, 3458, 3952, 5089, 5816, 6916, 9451, 10178, 11632, 13813, 13832, 18902, 20356, 27626, 27664, 37804, 40712, 55252, 66157, 75608, 81424, 96691, 110504, 132314, 151216, 179569, 193382, 221008, 264628, 359138, 386764, 529256, 718276, 773528, 1058512, 1256983, 1436552, 1547056, 2513966, 2873104, 5027932, 10055864, 20111728]

約数ペア:

[(1, 20111728), (2, 10055864), (4, 5027932), (7, 2873104), (8, 2513966), (13, 1547056), (14, 1436552), (16, 1256983), (19, 1058512), (26, 773528), (28, 718276), (38, 529256), (52, 386764), (56, 359138), (76, 264628), (91, 221008), (104, 193382), (112, 179569), (133, 151216), (152, 132314), (182, 110504), (208, 96691), (247, 81424), (266, 75608), (304, 66157), (364, 55252), (494, 40712), (532, 37804), (727, 27664), (728, 27626), (988, 20356), (1064, 18902), (1454, 13832), (1456, 13813), (1729, 11632), (1976, 10178), (2128, 9451), (2908, 6916), (3458, 5816), (3952, 5089)]