18240456

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{181}}^1$

素因数の和:239

約数の個数: 128

約数和(自身を含む): 55036800

約数和(自身を除く): 36796344

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 17, 19, 24, 26, 34, 38, 39, 51, 52, 57, 68, 76, 78, 102, 104, 114, 136, 152, 156, 181, 204, 221, 228, 247, 312, 323, 362, 408, 442, 456, 494, 543, 646, 663, 724, 741, 884, 969, 988, 1086, 1292, 1326, 1448, 1482, 1768, 1938, 1976, 2172, 2353, 2584, 2652, 2964, 3077, 3439, 3876, 4199, 4344, 4706, 5304, 5928, 6154, 6878, 7059, 7752, 8398, 9231, 9412, 10317, 12308, 12597, 13756, 14118, 16796, 18462, 18824, 20634, 24616, 25194, 27512, 28236, 33592, 36924, 40001, 41268, 44707, 50388, 56472, 58463, 73848, 80002, 82536, 89414, 100776, 116926, 120003, 134121, 160004, 175389, 178828, 233852, 240006, 268242, 320008, 350778, 357656, 467704, 480012, 536484, 701556, 760019, 960024, 1072968, 1403112, 1520038, 2280057, 3040076, 4560114, 6080152, 9120228, 18240456]

約数ペア:

[(1, 18240456), (2, 9120228), (3, 6080152), (4, 4560114), (6, 3040076), (8, 2280057), (12, 1520038), (13, 1403112), (17, 1072968), (19, 960024), (24, 760019), (26, 701556), (34, 536484), (38, 480012), (39, 467704), (51, 357656), (52, 350778), (57, 320008), (68, 268242), (76, 240006), (78, 233852), (102, 178828), (104, 175389), (114, 160004), (136, 134121), (152, 120003), (156, 116926), (181, 100776), (204, 89414), (221, 82536), (228, 80002), (247, 73848), (312, 58463), (323, 56472), (362, 50388), (408, 44707), (442, 41268), (456, 40001), (494, 36924), (543, 33592), (646, 28236), (663, 27512), (724, 25194), (741, 24616), (884, 20634), (969, 18824), (988, 18462), (1086, 16796), (1292, 14118), (1326, 13756), (1448, 12597), (1482, 12308), (1768, 10317), (1938, 9412), (1976, 9231), (2172, 8398), (2353, 7752), (2584, 7059), (2652, 6878), (2964, 6154), (3077, 5928), (3439, 5304), (3876, 4706), (4199, 4344)]