2852780

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{71}}^1$

素因数の和:135

約数の個数: 72

約数和(自身を含む): 7239456

約数和(自身を除く): 4386676

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 41, 49, 70, 71, 82, 98, 140, 142, 164, 196, 205, 245, 284, 287, 355, 410, 490, 497, 574, 710, 820, 980, 994, 1148, 1420, 1435, 1988, 2009, 2485, 2870, 2911, 3479, 4018, 4970, 5740, 5822, 6958, 8036, 9940, 10045, 11644, 13916, 14555, 17395, 20090, 20377, 29110, 34790, 40180, 40754, 58220, 69580, 81508, 101885, 142639, 203770, 285278, 407540, 570556, 713195, 1426390, 2852780]

約数ペア:

[(1, 2852780), (2, 1426390), (4, 713195), (5, 570556), (7, 407540), (10, 285278), (14, 203770), (20, 142639), (28, 101885), (35, 81508), (41, 69580), (49, 58220), (70, 40754), (71, 40180), (82, 34790), (98, 29110), (140, 20377), (142, 20090), (164, 17395), (196, 14555), (205, 13916), (245, 11644), (284, 10045), (287, 9940), (355, 8036), (410, 6958), (490, 5822), (497, 5740), (574, 4970), (710, 4018), (820, 3479), (980, 2911), (994, 2870), (1148, 2485), (1420, 2009), (1435, 1988)]