20305701

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{83}}^1$

素因数の和:163

約数の個数: 64

約数和(自身を含む): 35562240

約数和(自身を除く): 15256539

約数列:

[1, 3, 9, 13, 17, 27, 39, 41, 51, 83, 117, 123, 153, 221, 249, 351, 369, 459, 533, 663, 697, 747, 1079, 1107, 1411, 1599, 1989, 2091, 2241, 3237, 3403, 4233, 4797, 5967, 6273, 9061, 9711, 10209, 12699, 14391, 18343, 18819, 27183, 29133, 30627, 38097, 44239, 55029, 57851, 81549, 91881, 132717, 165087, 173553, 244647, 398151, 495261, 520659, 752063, 1194453, 1561977, 2256189, 6768567, 20305701]

約数ペア:

[(1, 20305701), (3, 6768567), (9, 2256189), (13, 1561977), (17, 1194453), (27, 752063), (39, 520659), (41, 495261), (51, 398151), (83, 244647), (117, 173553), (123, 165087), (153, 132717), (221, 91881), (249, 81549), (351, 57851), (369, 55029), (459, 44239), (533, 38097), (663, 30627), (697, 29133), (747, 27183), (1079, 18819), (1107, 18343), (1411, 14391), (1599, 12699), (1989, 10209), (2091, 9711), (2241, 9061), (3237, 6273), (3403, 5967), (4233, 4797)]