21777560

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{271}}^1$

素因数の和:337

約数の個数: 96

約数和(自身を含む): 58605120

約数和(自身を除く): 36827560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 41, 49, 56, 70, 82, 98, 140, 164, 196, 205, 245, 271, 280, 287, 328, 392, 410, 490, 542, 574, 820, 980, 1084, 1148, 1355, 1435, 1640, 1897, 1960, 2009, 2168, 2296, 2710, 2870, 3794, 4018, 5420, 5740, 7588, 8036, 9485, 10045, 10840, 11111, 11480, 13279, 15176, 16072, 18970, 20090, 22222, 26558, 37940, 40180, 44444, 53116, 55555, 66395, 75880, 77777, 80360, 88888, 106232, 111110, 132790, 155554, 222220, 265580, 311108, 388885, 444440, 531160, 544439, 622216, 777770, 1088878, 1555540, 2177756, 2722195, 3111080, 4355512, 5444390, 10888780, 21777560]

約数ペア:

[(1, 21777560), (2, 10888780), (4, 5444390), (5, 4355512), (7, 3111080), (8, 2722195), (10, 2177756), (14, 1555540), (20, 1088878), (28, 777770), (35, 622216), (40, 544439), (41, 531160), (49, 444440), (56, 388885), (70, 311108), (82, 265580), (98, 222220), (140, 155554), (164, 132790), (196, 111110), (205, 106232), (245, 88888), (271, 80360), (280, 77777), (287, 75880), (328, 66395), (392, 55555), (410, 53116), (490, 44444), (542, 40180), (574, 37940), (820, 26558), (980, 22222), (1084, 20090), (1148, 18970), (1355, 16072), (1435, 15176), (1640, 13279), (1897, 11480), (1960, 11111), (2009, 10840), (2168, 10045), (2296, 9485), (2710, 8036), (2870, 7588), (3794, 5740), (4018, 5420)]