21419384

素因数分解:

$2^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{491}}^1$

素因数の和:564

約数の個数: 64

約数和(自身を含む): 49593600

約数和(自身を除く): 28174216

約数列:

[1, 2, 4, 7, 8, 14, 19, 28, 38, 41, 56, 76, 82, 133, 152, 164, 266, 287, 328, 491, 532, 574, 779, 982, 1064, 1148, 1558, 1964, 2296, 3116, 3437, 3928, 5453, 6232, 6874, 9329, 10906, 13748, 18658, 20131, 21812, 27496, 37316, 40262, 43624, 65303, 74632, 80524, 130606, 140917, 161048, 261212, 281834, 382489, 522424, 563668, 764978, 1127336, 1529956, 2677423, 3059912, 5354846, 10709692, 21419384]

約数ペア:

[(1, 21419384), (2, 10709692), (4, 5354846), (7, 3059912), (8, 2677423), (14, 1529956), (19, 1127336), (28, 764978), (38, 563668), (41, 522424), (56, 382489), (76, 281834), (82, 261212), (133, 161048), (152, 140917), (164, 130606), (266, 80524), (287, 74632), (328, 65303), (491, 43624), (532, 40262), (574, 37316), (779, 27496), (982, 21812), (1064, 20131), (1148, 18658), (1558, 13748), (1964, 10906), (2296, 9329), (3116, 6874), (3437, 6232), (3928, 5453)]