81657660

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{199}}^1\times {\mathrm{977}}^1$

素因数の和:1195

約数の個数: 96

約数和(自身を含む): 262886400

約数和(自身を除く): 181228740

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 199, 210, 398, 420, 597, 796, 977, 995, 1194, 1393, 1954, 1990, 2388, 2786, 2931, 2985, 3908, 3980, 4179, 4885, 5572, 5862, 5970, 6839, 6965, 8358, 9770, 11724, 11940, 13678, 13930, 14655, 16716, 19540, 20517, 20895, 27356, 27860, 29310, 34195, 41034, 41790, 58620, 68390, 82068, 83580, 102585, 136780, 194423, 205170, 388846, 410340, 583269, 777692, 972115, 1166538, 1360961, 1944230, 2333076, 2721922, 2916345, 3888460, 4082883, 5443844, 5832690, 6804805, 8165766, 11665380, 13609610, 16331532, 20414415, 27219220, 40828830, 81657660]

約数ペア:

[(1, 81657660), (2, 40828830), (3, 27219220), (4, 20414415), (5, 16331532), (6, 13609610), (7, 11665380), (10, 8165766), (12, 6804805), (14, 5832690), (15, 5443844), (20, 4082883), (21, 3888460), (28, 2916345), (30, 2721922), (35, 2333076), (42, 1944230), (60, 1360961), (70, 1166538), (84, 972115), (105, 777692), (140, 583269), (199, 410340), (210, 388846), (398, 205170), (420, 194423), (597, 136780), (796, 102585), (977, 83580), (995, 82068), (1194, 68390), (1393, 58620), (1954, 41790), (1990, 41034), (2388, 34195), (2786, 29310), (2931, 27860), (2985, 27356), (3908, 20895), (3980, 20517), (4179, 19540), (4885, 16716), (5572, 14655), (5862, 13930), (5970, 13678), (6839, 11940), (6965, 11724), (8358, 9770)]