19888605

素因数分解:

$3^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{227}}^1$

素因数の和:311

約数の個数: 64

約数和(自身を含む): 39398400

約数和(自身を除く): 19509795

約数列:

[1, 3, 5, 9, 11, 15, 27, 33, 45, 55, 59, 99, 135, 165, 177, 227, 295, 297, 495, 531, 649, 681, 885, 1135, 1485, 1593, 1947, 2043, 2497, 2655, 3245, 3405, 5841, 6129, 7491, 7965, 9735, 10215, 12485, 13393, 17523, 22473, 29205, 30645, 37455, 40179, 66965, 67419, 87615, 112365, 120537, 147323, 200895, 337095, 361611, 441969, 602685, 736615, 1325907, 1808055, 2209845, 3977721, 6629535, 19888605]

約数ペア:

[(1, 19888605), (3, 6629535), (5, 3977721), (9, 2209845), (11, 1808055), (15, 1325907), (27, 736615), (33, 602685), (45, 441969), (55, 361611), (59, 337095), (99, 200895), (135, 147323), (165, 120537), (177, 112365), (227, 87615), (295, 67419), (297, 66965), (495, 40179), (531, 37455), (649, 30645), (681, 29205), (885, 22473), (1135, 17523), (1485, 13393), (1593, 12485), (1947, 10215), (2043, 9735), (2497, 7965), (2655, 7491), (3245, 6129), (3405, 5841)]