21148425

素因数分解:

$3^3\times 5^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1$

素因数の和:152

約数の個数: 96

約数和(自身を含む): 43747200

約数和(自身を除く): 22598775

約数列:

[1, 3, 5, 9, 15, 17, 19, 25, 27, 45, 51, 57, 75, 85, 95, 97, 135, 153, 171, 225, 255, 285, 291, 323, 425, 459, 475, 485, 513, 675, 765, 855, 873, 969, 1275, 1425, 1455, 1615, 1649, 1843, 2295, 2425, 2565, 2619, 2907, 3825, 4275, 4365, 4845, 4947, 5529, 7275, 8075, 8245, 8721, 9215, 11475, 12825, 13095, 14535, 14841, 16587, 21825, 24225, 24735, 27645, 31331, 41225, 43605, 44523, 46075, 49761, 65475, 72675, 74205, 82935, 93993, 123675, 138225, 156655, 218025, 222615, 248805, 281979, 371025, 414675, 469965, 783275, 845937, 1113075, 1244025, 1409895, 2349825, 4229685, 7049475, 21148425]

約数ペア:

[(1, 21148425), (3, 7049475), (5, 4229685), (9, 2349825), (15, 1409895), (17, 1244025), (19, 1113075), (25, 845937), (27, 783275), (45, 469965), (51, 414675), (57, 371025), (75, 281979), (85, 248805), (95, 222615), (97, 218025), (135, 156655), (153, 138225), (171, 123675), (225, 93993), (255, 82935), (285, 74205), (291, 72675), (323, 65475), (425, 49761), (459, 46075), (475, 44523), (485, 43605), (513, 41225), (675, 31331), (765, 27645), (855, 24735), (873, 24225), (969, 21825), (1275, 16587), (1425, 14841), (1455, 14535), (1615, 13095), (1649, 12825), (1843, 11475), (2295, 9215), (2425, 8721), (2565, 8245), (2619, 8075), (2907, 7275), (3825, 5529), (4275, 4947), (4365, 4845)]