201920823

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{83}}^1\times {\mathrm{239}}^1$

素因数の和:373

約数の個数: 64

約数和(自身を含む): 338688000

約数和(自身を除く): 136767177

約数列:

[1, 3, 9, 13, 27, 29, 39, 83, 87, 117, 239, 249, 261, 351, 377, 717, 747, 783, 1079, 1131, 2151, 2241, 2407, 3107, 3237, 3393, 6453, 6931, 7221, 9321, 9711, 10179, 19837, 20793, 21663, 27963, 29133, 31291, 59511, 62379, 64989, 83889, 90103, 93873, 178533, 187137, 257881, 270309, 281619, 535599, 575273, 773643, 810927, 844857, 1725819, 2320929, 2432781, 5177457, 6962787, 7478549, 15532371, 22435647, 67306941, 201920823]

約数ペア:

[(1, 201920823), (3, 67306941), (9, 22435647), (13, 15532371), (27, 7478549), (29, 6962787), (39, 5177457), (83, 2432781), (87, 2320929), (117, 1725819), (239, 844857), (249, 810927), (261, 773643), (351, 575273), (377, 535599), (717, 281619), (747, 270309), (783, 257881), (1079, 187137), (1131, 178533), (2151, 93873), (2241, 90103), (2407, 83889), (3107, 64989), (3237, 62379), (3393, 59511), (6453, 31291), (6931, 29133), (7221, 27963), (9321, 21663), (9711, 20793), (10179, 19837)]