21794240

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^3\times {\mathrm{31}}^1$

素因数の和:87

約数の個数: 112

約数和(自身を含む): 58033920

約数和(自身を除く): 36239680

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 32, 40, 52, 62, 64, 65, 80, 104, 124, 130, 155, 160, 169, 208, 248, 260, 310, 320, 338, 403, 416, 496, 520, 620, 676, 806, 832, 845, 992, 1040, 1240, 1352, 1612, 1690, 1984, 2015, 2080, 2197, 2480, 2704, 3224, 3380, 4030, 4160, 4394, 4960, 5239, 5408, 6448, 6760, 8060, 8788, 9920, 10478, 10816, 10985, 12896, 13520, 16120, 17576, 20956, 21970, 25792, 26195, 27040, 32240, 35152, 41912, 43940, 52390, 54080, 64480, 68107, 70304, 83824, 87880, 104780, 128960, 136214, 140608, 167648, 175760, 209560, 272428, 335296, 340535, 351520, 419120, 544856, 681070, 703040, 838240, 1089712, 1362140, 1676480, 2179424, 2724280, 4358848, 5448560, 10897120, 21794240]

約数ペア:

[(1, 21794240), (2, 10897120), (4, 5448560), (5, 4358848), (8, 2724280), (10, 2179424), (13, 1676480), (16, 1362140), (20, 1089712), (26, 838240), (31, 703040), (32, 681070), (40, 544856), (52, 419120), (62, 351520), (64, 340535), (65, 335296), (80, 272428), (104, 209560), (124, 175760), (130, 167648), (155, 140608), (160, 136214), (169, 128960), (208, 104780), (248, 87880), (260, 83824), (310, 70304), (320, 68107), (338, 64480), (403, 54080), (416, 52390), (496, 43940), (520, 41912), (620, 35152), (676, 32240), (806, 27040), (832, 26195), (845, 25792), (992, 21970), (1040, 20956), (1240, 17576), (1352, 16120), (1612, 13520), (1690, 12896), (1984, 10985), (2015, 10816), (2080, 10478), (2197, 9920), (2480, 8788), (2704, 8060), (3224, 6760), (3380, 6448), (4030, 5408), (4160, 5239), (4394, 4960)]