18977205

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{307}}^1\times {\mathrm{317}}^1$

素因数の和:645

約数の個数: 32

約数和(自身を含む): 32909184

約数和(自身を除く): 13931979

約数列:

[1, 3, 5, 13, 15, 39, 65, 195, 307, 317, 921, 951, 1535, 1585, 3991, 4121, 4605, 4755, 11973, 12363, 19955, 20605, 59865, 61815, 97319, 291957, 486595, 1265147, 1459785, 3795441, 6325735, 18977205]

約数ペア:

[(1, 18977205), (3, 6325735), (5, 3795441), (13, 1459785), (15, 1265147), (39, 486595), (65, 291957), (195, 97319), (307, 61815), (317, 59865), (921, 20605), (951, 19955), (1535, 12363), (1585, 11973), (3991, 4755), (4121, 4605)]