21230118

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{997}}^1$

素因数の和:1038

約数の個数: 72

約数和(自身を含む): 56981808

約数和(自身を除く): 35751690

約数列:

[1, 2, 3, 6, 7, 9, 13, 14, 18, 21, 26, 39, 42, 63, 78, 91, 117, 126, 169, 182, 234, 273, 338, 507, 546, 819, 997, 1014, 1183, 1521, 1638, 1994, 2366, 2991, 3042, 3549, 5982, 6979, 7098, 8973, 10647, 12961, 13958, 17946, 20937, 21294, 25922, 38883, 41874, 62811, 77766, 90727, 116649, 125622, 168493, 181454, 233298, 272181, 336986, 505479, 544362, 816543, 1010958, 1179451, 1516437, 1633086, 2358902, 3032874, 3538353, 7076706, 10615059, 21230118]

約数ペア:

[(1, 21230118), (2, 10615059), (3, 7076706), (6, 3538353), (7, 3032874), (9, 2358902), (13, 1633086), (14, 1516437), (18, 1179451), (21, 1010958), (26, 816543), (39, 544362), (42, 505479), (63, 336986), (78, 272181), (91, 233298), (117, 181454), (126, 168493), (169, 125622), (182, 116649), (234, 90727), (273, 77766), (338, 62811), (507, 41874), (546, 38883), (819, 25922), (997, 21294), (1014, 20937), (1183, 17946), (1521, 13958), (1638, 12961), (1994, 10647), (2366, 8973), (2991, 7098), (3042, 6979), (3549, 5982)]