21450884

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1901}}^1$

素因数の和:1956

約数の個数: 48

約数和(自身を含む): 47717376

約数和(自身を除く): 26266492

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 31, 52, 62, 91, 124, 182, 217, 364, 403, 434, 806, 868, 1612, 1901, 2821, 3802, 5642, 7604, 11284, 13307, 24713, 26614, 49426, 53228, 58931, 98852, 117862, 172991, 235724, 345982, 412517, 691964, 766103, 825034, 1532206, 1650068, 3064412, 5362721, 10725442, 21450884]

約数ペア:

[(1, 21450884), (2, 10725442), (4, 5362721), (7, 3064412), (13, 1650068), (14, 1532206), (26, 825034), (28, 766103), (31, 691964), (52, 412517), (62, 345982), (91, 235724), (124, 172991), (182, 117862), (217, 98852), (364, 58931), (403, 53228), (434, 49426), (806, 26614), (868, 24713), (1612, 13307), (1901, 11284), (2821, 7604), (3802, 5642)]