201712815

素因数分解:

$3^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{157}}^1\times {\mathrm{307}}^1$

素因数の和:509

約数の個数: 64

約数和(自身を含む): 373739520

約数和(自身を除く): 172026705

約数列:

[1, 3, 5, 9, 15, 27, 31, 45, 93, 135, 155, 157, 279, 307, 465, 471, 785, 837, 921, 1395, 1413, 1535, 2355, 2763, 4185, 4239, 4605, 4867, 7065, 8289, 9517, 13815, 14601, 21195, 24335, 28551, 41445, 43803, 47585, 48199, 73005, 85653, 131409, 142755, 144597, 219015, 240995, 256959, 428265, 433791, 657045, 722985, 1284795, 1301373, 1494169, 2168955, 4482507, 6506865, 7470845, 13447521, 22412535, 40342563, 67237605, 201712815]

約数ペア:

[(1, 201712815), (3, 67237605), (5, 40342563), (9, 22412535), (15, 13447521), (27, 7470845), (31, 6506865), (45, 4482507), (93, 2168955), (135, 1494169), (155, 1301373), (157, 1284795), (279, 722985), (307, 657045), (465, 433791), (471, 428265), (785, 256959), (837, 240995), (921, 219015), (1395, 144597), (1413, 142755), (1535, 131409), (2355, 85653), (2763, 73005), (4185, 48199), (4239, 47585), (4605, 43803), (4867, 41445), (7065, 28551), (8289, 24335), (9517, 21195), (13815, 14601)]