21173607

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{251}}^1$

素因数の和:380

約数の個数: 48

約数和(自身を含む): 38158848

約数和(自身を除く): 16985241

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 103, 117, 251, 273, 309, 721, 753, 819, 927, 1339, 1757, 2163, 2259, 3263, 4017, 5271, 6489, 9373, 9789, 12051, 15813, 22841, 25853, 28119, 29367, 68523, 77559, 84357, 180971, 205569, 232677, 336089, 542913, 1008267, 1628739, 2352623, 3024801, 7057869, 21173607]

約数ペア:

[(1, 21173607), (3, 7057869), (7, 3024801), (9, 2352623), (13, 1628739), (21, 1008267), (39, 542913), (63, 336089), (91, 232677), (103, 205569), (117, 180971), (251, 84357), (273, 77559), (309, 68523), (721, 29367), (753, 28119), (819, 25853), (927, 22841), (1339, 15813), (1757, 12051), (2163, 9789), (2259, 9373), (3263, 6489), (4017, 5271)]