21258972

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{2909}}^1$

素因数の和:2955

約数の個数: 72

約数和(自身を含む): 63554400

約数和(自身を除く): 42295428

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 29, 36, 42, 58, 63, 84, 87, 116, 126, 174, 203, 252, 261, 348, 406, 522, 609, 812, 1044, 1218, 1827, 2436, 2909, 3654, 5818, 7308, 8727, 11636, 17454, 20363, 26181, 34908, 40726, 52362, 61089, 81452, 84361, 104724, 122178, 168722, 183267, 244356, 253083, 337444, 366534, 506166, 590527, 733068, 759249, 1012332, 1181054, 1518498, 1771581, 2362108, 3036996, 3543162, 5314743, 7086324, 10629486, 21258972]

約数ペア:

[(1, 21258972), (2, 10629486), (3, 7086324), (4, 5314743), (6, 3543162), (7, 3036996), (9, 2362108), (12, 1771581), (14, 1518498), (18, 1181054), (21, 1012332), (28, 759249), (29, 733068), (36, 590527), (42, 506166), (58, 366534), (63, 337444), (84, 253083), (87, 244356), (116, 183267), (126, 168722), (174, 122178), (203, 104724), (252, 84361), (261, 81452), (348, 61089), (406, 52362), (522, 40726), (609, 34908), (812, 26181), (1044, 20363), (1218, 17454), (1827, 11636), (2436, 8727), (2909, 7308), (3654, 5818)]