18558801

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{389}}^1$

素因数の和:451

約数の個数: 40

約数和(自身を含む): 30201600

約数和(自身を除く): 11642799

約数列:

[1, 3, 9, 19, 27, 31, 57, 81, 93, 171, 279, 389, 513, 589, 837, 1167, 1539, 1767, 2511, 3501, 5301, 7391, 10503, 12059, 15903, 22173, 31509, 36177, 47709, 66519, 108531, 199557, 229121, 325593, 598671, 687363, 976779, 2062089, 6186267, 18558801]

約数ペア:

[(1, 18558801), (3, 6186267), (9, 2062089), (19, 976779), (27, 687363), (31, 598671), (57, 325593), (81, 229121), (93, 199557), (171, 108531), (279, 66519), (389, 47709), (513, 36177), (589, 31509), (837, 22173), (1167, 15903), (1539, 12059), (1767, 10503), (2511, 7391), (3501, 5301)]