20397720

素因数分解:

$2^3\times 3^1\times 5^1\times 7^2\times {\mathrm{3469}}^1$

素因数の和:3497

約数の個数: 96

約数和(自身を含む): 71204400

約数和(自身を除く): 50806680

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 49, 56, 60, 70, 84, 98, 105, 120, 140, 147, 168, 196, 210, 245, 280, 294, 392, 420, 490, 588, 735, 840, 980, 1176, 1470, 1960, 2940, 3469, 5880, 6938, 10407, 13876, 17345, 20814, 24283, 27752, 34690, 41628, 48566, 52035, 69380, 72849, 83256, 97132, 104070, 121415, 138760, 145698, 169981, 194264, 208140, 242830, 291396, 339962, 364245, 416280, 485660, 509943, 582792, 679924, 728490, 849905, 971320, 1019886, 1359848, 1456980, 1699810, 2039772, 2549715, 2913960, 3399620, 4079544, 5099430, 6799240, 10198860, 20397720]

約数ペア:

[(1, 20397720), (2, 10198860), (3, 6799240), (4, 5099430), (5, 4079544), (6, 3399620), (7, 2913960), (8, 2549715), (10, 2039772), (12, 1699810), (14, 1456980), (15, 1359848), (20, 1019886), (21, 971320), (24, 849905), (28, 728490), (30, 679924), (35, 582792), (40, 509943), (42, 485660), (49, 416280), (56, 364245), (60, 339962), (70, 291396), (84, 242830), (98, 208140), (105, 194264), (120, 169981), (140, 145698), (147, 138760), (168, 121415), (196, 104070), (210, 97132), (245, 83256), (280, 72849), (294, 69380), (392, 52035), (420, 48566), (490, 41628), (588, 34690), (735, 27752), (840, 24283), (980, 20814), (1176, 17345), (1470, 13876), (1960, 10407), (2940, 6938), (3469, 5880)]