21855392

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{491}}^1$

素因数の和:621

約数の個数: 48

約数和(自身を含む): 46865952

約数和(自身を除く): 25010560

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 104, 107, 208, 214, 416, 428, 491, 856, 982, 1391, 1712, 1964, 2782, 3424, 3928, 5564, 6383, 7856, 11128, 12766, 15712, 22256, 25532, 44512, 51064, 52537, 102128, 105074, 204256, 210148, 420296, 682981, 840592, 1365962, 1681184, 2731924, 5463848, 10927696, 21855392]

約数ペア:

[(1, 21855392), (2, 10927696), (4, 5463848), (8, 2731924), (13, 1681184), (16, 1365962), (26, 840592), (32, 682981), (52, 420296), (104, 210148), (107, 204256), (208, 105074), (214, 102128), (416, 52537), (428, 51064), (491, 44512), (856, 25532), (982, 22256), (1391, 15712), (1712, 12766), (1964, 11128), (2782, 7856), (3424, 6383), (3928, 5564)]