21709980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{4159}}^1$

素因数の和:4203

約数の個数: 72

約数和(自身を含む): 68140800

約数和(自身を除く): 46430820

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 29, 30, 36, 45, 58, 60, 87, 90, 116, 145, 174, 180, 261, 290, 348, 435, 522, 580, 870, 1044, 1305, 1740, 2610, 4159, 5220, 8318, 12477, 16636, 20795, 24954, 37431, 41590, 49908, 62385, 74862, 83180, 120611, 124770, 149724, 187155, 241222, 249540, 361833, 374310, 482444, 603055, 723666, 748620, 1085499, 1206110, 1447332, 1809165, 2170998, 2412220, 3618330, 4341996, 5427495, 7236660, 10854990, 21709980]

約数ペア:

[(1, 21709980), (2, 10854990), (3, 7236660), (4, 5427495), (5, 4341996), (6, 3618330), (9, 2412220), (10, 2170998), (12, 1809165), (15, 1447332), (18, 1206110), (20, 1085499), (29, 748620), (30, 723666), (36, 603055), (45, 482444), (58, 374310), (60, 361833), (87, 249540), (90, 241222), (116, 187155), (145, 149724), (174, 124770), (180, 120611), (261, 83180), (290, 74862), (348, 62385), (435, 49908), (522, 41590), (580, 37431), (870, 24954), (1044, 20795), (1305, 16636), (1740, 12477), (2610, 8318), (4159, 5220)]