18872505

素因数分解:

$3^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{193}}^1$

素因数の和:298

約数の個数: 48

約数和(自身を含む): 34319376

約数和(自身を除く): 15446871

約数列:

[1, 3, 5, 9, 15, 41, 45, 53, 123, 159, 193, 205, 265, 369, 477, 579, 615, 795, 965, 1737, 1845, 2173, 2385, 2895, 6519, 7913, 8685, 10229, 10865, 19557, 23739, 30687, 32595, 39565, 51145, 71217, 92061, 97785, 118695, 153435, 356085, 419389, 460305, 1258167, 2096945, 3774501, 6290835, 18872505]

約数ペア:

[(1, 18872505), (3, 6290835), (5, 3774501), (9, 2096945), (15, 1258167), (41, 460305), (45, 419389), (53, 356085), (123, 153435), (159, 118695), (193, 97785), (205, 92061), (265, 71217), (369, 51145), (477, 39565), (579, 32595), (615, 30687), (795, 23739), (965, 19557), (1737, 10865), (1845, 10229), (2173, 8685), (2385, 7913), (2895, 6519)]