21584680

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{103}}^1$

素因数の和:171

約数の個数: 96

約数和(自身を含む): 54812160

約数和(自身を除く): 33227480

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 31, 40, 52, 62, 65, 103, 104, 124, 130, 155, 169, 206, 248, 260, 310, 338, 403, 412, 515, 520, 620, 676, 806, 824, 845, 1030, 1240, 1339, 1352, 1612, 1690, 2015, 2060, 2678, 3193, 3224, 3380, 4030, 4120, 5239, 5356, 6386, 6695, 6760, 8060, 10478, 10712, 12772, 13390, 15965, 16120, 17407, 20956, 25544, 26195, 26780, 31930, 34814, 41509, 41912, 52390, 53560, 63860, 69628, 83018, 87035, 104780, 127720, 139256, 166036, 174070, 207545, 209560, 332072, 348140, 415090, 539617, 696280, 830180, 1079234, 1660360, 2158468, 2698085, 4316936, 5396170, 10792340, 21584680]

約数ペア:

[(1, 21584680), (2, 10792340), (4, 5396170), (5, 4316936), (8, 2698085), (10, 2158468), (13, 1660360), (20, 1079234), (26, 830180), (31, 696280), (40, 539617), (52, 415090), (62, 348140), (65, 332072), (103, 209560), (104, 207545), (124, 174070), (130, 166036), (155, 139256), (169, 127720), (206, 104780), (248, 87035), (260, 83018), (310, 69628), (338, 63860), (403, 53560), (412, 52390), (515, 41912), (520, 41509), (620, 34814), (676, 31930), (806, 26780), (824, 26195), (845, 25544), (1030, 20956), (1240, 17407), (1339, 16120), (1352, 15965), (1612, 13390), (1690, 12772), (2015, 10712), (2060, 10478), (2678, 8060), (3193, 6760), (3224, 6695), (3380, 6386), (4030, 5356), (4120, 5239)]