21510225

素因数分解:

$3^3\times 5^2\times {\mathrm{11}}^1\times {\mathrm{2897}}^1$

素因数の和:2927

約数の個数: 48

約数和(自身を含む): 43122240

約数和(自身を除く): 21612015

約数列:

[1, 3, 5, 9, 11, 15, 25, 27, 33, 45, 55, 75, 99, 135, 165, 225, 275, 297, 495, 675, 825, 1485, 2475, 2897, 7425, 8691, 14485, 26073, 31867, 43455, 72425, 78219, 95601, 130365, 159335, 217275, 286803, 391095, 478005, 651825, 796675, 860409, 1434015, 1955475, 2390025, 4302045, 7170075, 21510225]

約数ペア:

[(1, 21510225), (3, 7170075), (5, 4302045), (9, 2390025), (11, 1955475), (15, 1434015), (25, 860409), (27, 796675), (33, 651825), (45, 478005), (55, 391095), (75, 286803), (99, 217275), (135, 159335), (165, 130365), (225, 95601), (275, 78219), (297, 72425), (495, 43455), (675, 31867), (825, 26073), (1485, 14485), (2475, 8691), (2897, 7425)]