21388635

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{383}}^1$

素因数の和:484

約数の個数: 48

約数和(自身を含む): 39896064

約数和(自身を除く): 18507429

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 73, 85, 153, 219, 255, 365, 383, 657, 765, 1095, 1149, 1241, 1915, 3285, 3447, 3723, 5745, 6205, 6511, 11169, 17235, 18615, 19533, 27959, 32555, 55845, 58599, 83877, 97665, 139795, 251631, 292995, 419385, 475303, 1258155, 1425909, 2376515, 4277727, 7129545, 21388635]

約数ペア:

[(1, 21388635), (3, 7129545), (5, 4277727), (9, 2376515), (15, 1425909), (17, 1258155), (45, 475303), (51, 419385), (73, 292995), (85, 251631), (153, 139795), (219, 97665), (255, 83877), (365, 58599), (383, 55845), (657, 32555), (765, 27959), (1095, 19533), (1149, 18615), (1241, 17235), (1915, 11169), (3285, 6511), (3447, 6205), (3723, 5745)]