20742960

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{12347}}^1$

素因数の和:12370

約数の個数: 80

約数和(自身を含む): 73495296

約数和(自身を除く): 52752336

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 105, 112, 120, 140, 168, 210, 240, 280, 336, 420, 560, 840, 1680, 12347, 24694, 37041, 49388, 61735, 74082, 86429, 98776, 123470, 148164, 172858, 185205, 197552, 246940, 259287, 296328, 345716, 370410, 432145, 493880, 518574, 592656, 691432, 740820, 864290, 987760, 1037148, 1296435, 1382864, 1481640, 1728580, 2074296, 2592870, 2963280, 3457160, 4148592, 5185740, 6914320, 10371480, 20742960]

約数ペア:

[(1, 20742960), (2, 10371480), (3, 6914320), (4, 5185740), (5, 4148592), (6, 3457160), (7, 2963280), (8, 2592870), (10, 2074296), (12, 1728580), (14, 1481640), (15, 1382864), (16, 1296435), (20, 1037148), (21, 987760), (24, 864290), (28, 740820), (30, 691432), (35, 592656), (40, 518574), (42, 493880), (48, 432145), (56, 370410), (60, 345716), (70, 296328), (80, 259287), (84, 246940), (105, 197552), (112, 185205), (120, 172858), (140, 148164), (168, 123470), (210, 98776), (240, 86429), (280, 74082), (336, 61735), (420, 49388), (560, 37041), (840, 24694), (1680, 12347)]