20771415

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1$

素因数の和:149

約数の個数: 96

約数和(自身を含む): 44568576

約数和(自身を除く): 23797161

約数列:

[1, 3, 5, 7, 9, 15, 21, 23, 35, 45, 47, 61, 63, 69, 105, 115, 141, 161, 183, 207, 235, 305, 315, 329, 345, 423, 427, 483, 549, 705, 805, 915, 987, 1035, 1081, 1281, 1403, 1449, 1645, 2115, 2135, 2415, 2745, 2867, 2961, 3243, 3843, 4209, 4935, 5405, 6405, 7015, 7245, 7567, 8601, 9729, 9821, 12627, 14335, 14805, 16215, 19215, 20069, 21045, 22701, 25803, 29463, 37835, 43005, 48645, 49105, 60207, 63135, 65941, 68103, 88389, 100345, 113505, 129015, 147315, 180621, 197823, 301035, 329705, 340515, 441945, 461587, 593469, 903105, 989115, 1384761, 2307935, 2967345, 4154283, 6923805, 20771415]

約数ペア:

[(1, 20771415), (3, 6923805), (5, 4154283), (7, 2967345), (9, 2307935), (15, 1384761), (21, 989115), (23, 903105), (35, 593469), (45, 461587), (47, 441945), (61, 340515), (63, 329705), (69, 301035), (105, 197823), (115, 180621), (141, 147315), (161, 129015), (183, 113505), (207, 100345), (235, 88389), (305, 68103), (315, 65941), (329, 63135), (345, 60207), (423, 49105), (427, 48645), (483, 43005), (549, 37835), (705, 29463), (805, 25803), (915, 22701), (987, 21045), (1035, 20069), (1081, 19215), (1281, 16215), (1403, 14805), (1449, 14335), (1645, 12627), (2115, 9821), (2135, 9729), (2415, 8601), (2745, 7567), (2867, 7245), (2961, 7015), (3243, 6405), (3843, 5405), (4209, 4935)]