18836685

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{643}}^1$

素因数の和:695

約数の個数: 64

約数和(自身を含む): 39567360

約数和(自身を除く): 20730675

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 31, 35, 45, 63, 93, 105, 135, 155, 189, 217, 279, 315, 465, 643, 651, 837, 945, 1085, 1395, 1929, 1953, 3215, 3255, 4185, 4501, 5787, 5859, 9645, 9765, 13503, 17361, 19933, 22505, 28935, 29295, 40509, 59799, 67515, 86805, 99665, 121527, 139531, 179397, 202545, 298995, 418593, 538191, 607635, 697655, 896985, 1255779, 2092965, 2690955, 3767337, 6278895, 18836685]

約数ペア:

[(1, 18836685), (3, 6278895), (5, 3767337), (7, 2690955), (9, 2092965), (15, 1255779), (21, 896985), (27, 697655), (31, 607635), (35, 538191), (45, 418593), (63, 298995), (93, 202545), (105, 179397), (135, 139531), (155, 121527), (189, 99665), (217, 86805), (279, 67515), (315, 59799), (465, 40509), (643, 29295), (651, 28935), (837, 22505), (945, 19933), (1085, 17361), (1395, 13503), (1929, 9765), (1953, 9645), (3215, 5859), (3255, 5787), (4185, 4501)]