20400954

素因数分解:

$2^1\times 3^1\times 7^3\times {\mathrm{23}}^1\times {\mathrm{431}}^1$

素因数の和:480

約数の個数: 64

約数和(自身を含む): 49766400

約数和(自身を除く): 29365446

約数列:

[1, 2, 3, 6, 7, 14, 21, 23, 42, 46, 49, 69, 98, 138, 147, 161, 294, 322, 343, 431, 483, 686, 862, 966, 1029, 1127, 1293, 2058, 2254, 2586, 3017, 3381, 6034, 6762, 7889, 9051, 9913, 15778, 18102, 19826, 21119, 23667, 29739, 42238, 47334, 59478, 63357, 69391, 126714, 138782, 147833, 208173, 295666, 416346, 443499, 485737, 886998, 971474, 1457211, 2914422, 3400159, 6800318, 10200477, 20400954]

約数ペア:

[(1, 20400954), (2, 10200477), (3, 6800318), (6, 3400159), (7, 2914422), (14, 1457211), (21, 971474), (23, 886998), (42, 485737), (46, 443499), (49, 416346), (69, 295666), (98, 208173), (138, 147833), (147, 138782), (161, 126714), (294, 69391), (322, 63357), (343, 59478), (431, 47334), (483, 42238), (686, 29739), (862, 23667), (966, 21119), (1029, 19826), (1127, 18102), (1293, 15778), (2058, 9913), (2254, 9051), (2586, 7889), (3017, 6762), (3381, 6034)]