18121257

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{331}}^1$

素因数の和:434

約数の個数: 48

約数和(自身を含む): 33146880

約数和(自身を除く): 15025623

約数列:

[1, 3, 7, 9, 11, 21, 33, 63, 77, 79, 99, 231, 237, 331, 553, 693, 711, 869, 993, 1659, 2317, 2607, 2979, 3641, 4977, 6083, 6951, 7821, 10923, 18249, 20853, 25487, 26149, 32769, 54747, 76461, 78447, 183043, 229383, 235341, 287639, 549129, 862917, 1647387, 2013473, 2588751, 6040419, 18121257]

約数ペア:

[(1, 18121257), (3, 6040419), (7, 2588751), (9, 2013473), (11, 1647387), (21, 862917), (33, 549129), (63, 287639), (77, 235341), (79, 229383), (99, 183043), (231, 78447), (237, 76461), (331, 54747), (553, 32769), (693, 26149), (711, 25487), (869, 20853), (993, 18249), (1659, 10923), (2317, 7821), (2607, 6951), (2979, 6083), (3641, 4977)]