18784857

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{67}}^1\times {\mathrm{79}}^1$

素因数の和:182

約数の個数: 48

約数和(自身を含む): 31856640

約数和(自身を除く): 13071783

約数列:

[1, 3, 7, 13, 21, 39, 67, 79, 91, 169, 201, 237, 273, 469, 507, 553, 871, 1027, 1183, 1407, 1659, 2613, 3081, 3549, 5293, 6097, 7189, 11323, 13351, 15879, 18291, 21567, 33969, 37051, 40053, 68809, 79261, 93457, 111153, 206427, 237783, 280371, 481663, 894517, 1444989, 2683551, 6261619, 18784857]

約数ペア:

[(1, 18784857), (3, 6261619), (7, 2683551), (13, 1444989), (21, 894517), (39, 481663), (67, 280371), (79, 237783), (91, 206427), (169, 111153), (201, 93457), (237, 79261), (273, 68809), (469, 40053), (507, 37051), (553, 33969), (871, 21567), (1027, 18291), (1183, 15879), (1407, 13351), (1659, 11323), (2613, 7189), (3081, 6097), (3549, 5293)]