20565765

素因数分解:

$3^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{1259}}^1$

素因数の和:1295

約数の個数: 48

約数和(自身を含む): 40219200

約数和(自身を除く): 19653435

約数列:

[1, 3, 5, 9, 11, 15, 27, 33, 45, 55, 99, 121, 135, 165, 297, 363, 495, 605, 1089, 1259, 1485, 1815, 3267, 3777, 5445, 6295, 11331, 13849, 16335, 18885, 33993, 41547, 56655, 69245, 124641, 152339, 169965, 207735, 373923, 457017, 623205, 761695, 1371051, 1869615, 2285085, 4113153, 6855255, 20565765]

約数ペア:

[(1, 20565765), (3, 6855255), (5, 4113153), (9, 2285085), (11, 1869615), (15, 1371051), (27, 761695), (33, 623205), (45, 457017), (55, 373923), (99, 207735), (121, 169965), (135, 152339), (165, 124641), (297, 69245), (363, 56655), (495, 41547), (605, 33993), (1089, 18885), (1259, 16335), (1485, 13849), (1815, 11331), (3267, 6295), (3777, 5445)]