278493327

素因数分解:

$3^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{223}}^1\times {\mathrm{461}}^1$

素因数の和:740

約数の個数: 48

約数和(自身を含む): 473561088

約数和(自身を除く): 195067761

約数列:

[1, 3, 7, 9, 21, 43, 63, 129, 223, 301, 387, 461, 669, 903, 1383, 1561, 2007, 2709, 3227, 4149, 4683, 9589, 9681, 14049, 19823, 28767, 29043, 59469, 67123, 86301, 102803, 138761, 178407, 201369, 308409, 416283, 604107, 719621, 925227, 1248849, 2158863, 4420529, 6476589, 13261587, 30943703, 39784761, 92831109, 278493327]

約数ペア:

[(1, 278493327), (3, 92831109), (7, 39784761), (9, 30943703), (21, 13261587), (43, 6476589), (63, 4420529), (129, 2158863), (223, 1248849), (301, 925227), (387, 719621), (461, 604107), (669, 416283), (903, 308409), (1383, 201369), (1561, 178407), (2007, 138761), (2709, 102803), (3227, 86301), (4149, 67123), (4683, 59469), (9589, 29043), (9681, 28767), (14049, 19823)]