21166275

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1277}}^1$

素因数の和:1320

約数の個数: 48

約数和(自身を含む): 39934944

約数和(自身を除く): 18768669

約数列:

[1, 3, 5, 13, 15, 17, 25, 39, 51, 65, 75, 85, 195, 221, 255, 325, 425, 663, 975, 1105, 1275, 1277, 3315, 3831, 5525, 6385, 16575, 16601, 19155, 21709, 31925, 49803, 65127, 83005, 95775, 108545, 249015, 282217, 325635, 415025, 542725, 846651, 1245075, 1411085, 1628175, 4233255, 7055425, 21166275]

約数ペア:

[(1, 21166275), (3, 7055425), (5, 4233255), (13, 1628175), (15, 1411085), (17, 1245075), (25, 846651), (39, 542725), (51, 415025), (65, 325635), (75, 282217), (85, 249015), (195, 108545), (221, 95775), (255, 83005), (325, 65127), (425, 49803), (663, 31925), (975, 21709), (1105, 19155), (1275, 16601), (1277, 16575), (3315, 6385), (3831, 5525)]