21723075

素因数分解:

$3^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{131}}^1$

素因数の和:225

約数の個数: 72

約数和(自身を含む): 43407936

約数和(自身を除く): 21684861

約数列:

[1, 3, 5, 9, 11, 15, 25, 33, 45, 55, 67, 75, 99, 131, 165, 201, 225, 275, 335, 393, 495, 603, 655, 737, 825, 1005, 1179, 1441, 1675, 1965, 2211, 2475, 3015, 3275, 3685, 4323, 5025, 5895, 6633, 7205, 8777, 9825, 11055, 12969, 15075, 18425, 21615, 26331, 29475, 33165, 36025, 43885, 55275, 64845, 78993, 96547, 108075, 131655, 165825, 219425, 289641, 324225, 394965, 482735, 658275, 868923, 1448205, 1974825, 2413675, 4344615, 7241025, 21723075]

約数ペア:

[(1, 21723075), (3, 7241025), (5, 4344615), (9, 2413675), (11, 1974825), (15, 1448205), (25, 868923), (33, 658275), (45, 482735), (55, 394965), (67, 324225), (75, 289641), (99, 219425), (131, 165825), (165, 131655), (201, 108075), (225, 96547), (275, 78993), (335, 64845), (393, 55275), (495, 43885), (603, 36025), (655, 33165), (737, 29475), (825, 26331), (1005, 21615), (1179, 18425), (1441, 15075), (1675, 12969), (1965, 11055), (2211, 9825), (2475, 8777), (3015, 7205), (3275, 6633), (3685, 5895), (4323, 5025)]