20854515

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{1303}}^1$

素因数の和:1419

約数の個数: 32

約数和(自身を含む): 36804096

約数和(自身を除く): 15949581

約数列:

[1, 3, 5, 11, 15, 33, 55, 97, 165, 291, 485, 1067, 1303, 1455, 3201, 3909, 5335, 6515, 14333, 16005, 19545, 42999, 71665, 126391, 214995, 379173, 631955, 1390301, 1895865, 4170903, 6951505, 20854515]

約数ペア:

[(1, 20854515), (3, 6951505), (5, 4170903), (11, 1895865), (15, 1390301), (33, 631955), (55, 379173), (97, 214995), (165, 126391), (291, 71665), (485, 42999), (1067, 19545), (1303, 16005), (1455, 14333), (3201, 6515), (3909, 5335)]