18147987

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{239}}^1$

素因数の和:328

約数の個数: 48

約数和(自身を含む): 31449600

約数和(自身を除く): 13301613

約数列:

[1, 3, 9, 11, 13, 33, 39, 59, 99, 117, 143, 177, 239, 429, 531, 649, 717, 767, 1287, 1947, 2151, 2301, 2629, 3107, 5841, 6903, 7887, 8437, 9321, 14101, 23661, 25311, 27963, 34177, 42303, 75933, 102531, 126909, 155111, 183313, 307593, 465333, 549939, 1395999, 1649817, 2016443, 6049329, 18147987]

約数ペア:

[(1, 18147987), (3, 6049329), (9, 2016443), (11, 1649817), (13, 1395999), (33, 549939), (39, 465333), (59, 307593), (99, 183313), (117, 155111), (143, 126909), (177, 102531), (239, 75933), (429, 42303), (531, 34177), (649, 27963), (717, 25311), (767, 23661), (1287, 14101), (1947, 9321), (2151, 8437), (2301, 7887), (2629, 6903), (3107, 5841)]