81020880

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{859}}^1$

素因数の和:1009

約数の個数: 120

約数和(自身を含む): 274491360

約数和(自身を除く): 193470480

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 131, 144, 180, 240, 262, 360, 393, 524, 655, 720, 786, 859, 1048, 1179, 1310, 1572, 1718, 1965, 2096, 2358, 2577, 2620, 3144, 3436, 3930, 4295, 4716, 5154, 5240, 5895, 6288, 6872, 7731, 7860, 8590, 9432, 10308, 10480, 11790, 12885, 13744, 15462, 15720, 17180, 18864, 20616, 23580, 25770, 30924, 31440, 34360, 38655, 41232, 47160, 51540, 61848, 68720, 77310, 94320, 103080, 112529, 123696, 154620, 206160, 225058, 309240, 337587, 450116, 562645, 618480, 675174, 900232, 1012761, 1125290, 1350348, 1687935, 1800464, 2025522, 2250580, 2700696, 3375870, 4051044, 4501160, 5063805, 5401392, 6751740, 8102088, 9002320, 10127610, 13503480, 16204176, 20255220, 27006960, 40510440, 81020880]

約数ペア:

[(1, 81020880), (2, 40510440), (3, 27006960), (4, 20255220), (5, 16204176), (6, 13503480), (8, 10127610), (9, 9002320), (10, 8102088), (12, 6751740), (15, 5401392), (16, 5063805), (18, 4501160), (20, 4051044), (24, 3375870), (30, 2700696), (36, 2250580), (40, 2025522), (45, 1800464), (48, 1687935), (60, 1350348), (72, 1125290), (80, 1012761), (90, 900232), (120, 675174), (131, 618480), (144, 562645), (180, 450116), (240, 337587), (262, 309240), (360, 225058), (393, 206160), (524, 154620), (655, 123696), (720, 112529), (786, 103080), (859, 94320), (1048, 77310), (1179, 68720), (1310, 61848), (1572, 51540), (1718, 47160), (1965, 41232), (2096, 38655), (2358, 34360), (2577, 31440), (2620, 30924), (3144, 25770), (3436, 23580), (3930, 20616), (4295, 18864), (4716, 17180), (5154, 15720), (5240, 15462), (5895, 13744), (6288, 12885), (6872, 11790), (7731, 10480), (7860, 10308), (8590, 9432)]