20202525

素因数分解:

$3^2\times 5^2\times 7^1\times {\mathrm{101}}^1\times {\mathrm{127}}^1$

素因数の和:251

約数の個数: 72

約数和(自身を含む): 42092544

約数和(自身を除く): 21890019

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 35, 45, 63, 75, 101, 105, 127, 175, 225, 303, 315, 381, 505, 525, 635, 707, 889, 909, 1143, 1515, 1575, 1905, 2121, 2525, 2667, 3175, 3535, 4445, 4545, 5715, 6363, 7575, 8001, 9525, 10605, 12827, 13335, 17675, 22225, 22725, 28575, 31815, 38481, 40005, 53025, 64135, 66675, 89789, 115443, 159075, 192405, 200025, 269367, 320675, 448945, 577215, 808101, 962025, 1346835, 2244725, 2886075, 4040505, 6734175, 20202525]

約数ペア:

[(1, 20202525), (3, 6734175), (5, 4040505), (7, 2886075), (9, 2244725), (15, 1346835), (21, 962025), (25, 808101), (35, 577215), (45, 448945), (63, 320675), (75, 269367), (101, 200025), (105, 192405), (127, 159075), (175, 115443), (225, 89789), (303, 66675), (315, 64135), (381, 53025), (505, 40005), (525, 38481), (635, 31815), (707, 28575), (889, 22725), (909, 22225), (1143, 17675), (1515, 13335), (1575, 12827), (1905, 10605), (2121, 9525), (2525, 8001), (2667, 7575), (3175, 6363), (3535, 5715), (4445, 4545)]