21769965

素因数分解:

$3^4\times 5^1\times 7^2\times {\mathrm{1097}}^1$

素因数の和:1128

約数の個数: 60

約数和(自身を含む): 45437436

約数和(自身を除く): 23667471

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 49, 63, 81, 105, 135, 147, 189, 245, 315, 405, 441, 567, 735, 945, 1097, 1323, 2205, 2835, 3291, 3969, 5485, 6615, 7679, 9873, 16455, 19845, 23037, 29619, 38395, 49365, 53753, 69111, 88857, 115185, 148095, 161259, 207333, 268765, 345555, 444285, 483777, 621999, 806295, 1036665, 1451331, 2418885, 3109995, 4353993, 7256655, 21769965]

約数ペア:

[(1, 21769965), (3, 7256655), (5, 4353993), (7, 3109995), (9, 2418885), (15, 1451331), (21, 1036665), (27, 806295), (35, 621999), (45, 483777), (49, 444285), (63, 345555), (81, 268765), (105, 207333), (135, 161259), (147, 148095), (189, 115185), (245, 88857), (315, 69111), (405, 53753), (441, 49365), (567, 38395), (735, 29619), (945, 23037), (1097, 19845), (1323, 16455), (2205, 9873), (2835, 7679), (3291, 6615), (3969, 5485)]