21460545

素因数分解:

$3^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{1039}}^1$

素因数の和:1076

約数の個数: 48

約数和(自身を含む): 40884480

約数和(自身を除く): 19423935

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 51, 81, 85, 135, 153, 243, 255, 405, 459, 765, 1039, 1215, 1377, 2295, 3117, 4131, 5195, 6885, 9351, 15585, 17663, 20655, 28053, 46755, 52989, 84159, 88315, 140265, 158967, 252477, 264945, 420795, 476901, 794835, 1262385, 1430703, 2384505, 4292109, 7153515, 21460545]

約数ペア:

[(1, 21460545), (3, 7153515), (5, 4292109), (9, 2384505), (15, 1430703), (17, 1262385), (27, 794835), (45, 476901), (51, 420795), (81, 264945), (85, 252477), (135, 158967), (153, 140265), (243, 88315), (255, 84159), (405, 52989), (459, 46755), (765, 28053), (1039, 20655), (1215, 17663), (1377, 15585), (2295, 9351), (3117, 6885), (4131, 5195)]