20129760

素因数分解:

$2^5\times 3^2\times 5^1\times 7^1\times {\mathrm{1997}}^1$

素因数の和:2025

約数の個数: 144

約数和(自身を含む): 78545376

約数和(自身を除く): 58415616

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 32, 35, 36, 40, 42, 45, 48, 56, 60, 63, 70, 72, 80, 84, 90, 96, 105, 112, 120, 126, 140, 144, 160, 168, 180, 210, 224, 240, 252, 280, 288, 315, 336, 360, 420, 480, 504, 560, 630, 672, 720, 840, 1008, 1120, 1260, 1440, 1680, 1997, 2016, 2520, 3360, 3994, 5040, 5991, 7988, 9985, 10080, 11982, 13979, 15976, 17973, 19970, 23964, 27958, 29955, 31952, 35946, 39940, 41937, 47928, 55916, 59910, 63904, 69895, 71892, 79880, 83874, 89865, 95856, 111832, 119820, 125811, 139790, 143784, 159760, 167748, 179730, 191712, 209685, 223664, 239640, 251622, 279580, 287568, 319520, 335496, 359460, 419370, 447328, 479280, 503244, 559160, 575136, 629055, 670992, 718920, 838740, 958560, 1006488, 1118320, 1258110, 1341984, 1437840, 1677480, 2012976, 2236640, 2516220, 2875680, 3354960, 4025952, 5032440, 6709920, 10064880, 20129760]

約数ペア:

[(1, 20129760), (2, 10064880), (3, 6709920), (4, 5032440), (5, 4025952), (6, 3354960), (7, 2875680), (8, 2516220), (9, 2236640), (10, 2012976), (12, 1677480), (14, 1437840), (15, 1341984), (16, 1258110), (18, 1118320), (20, 1006488), (21, 958560), (24, 838740), (28, 718920), (30, 670992), (32, 629055), (35, 575136), (36, 559160), (40, 503244), (42, 479280), (45, 447328), (48, 419370), (56, 359460), (60, 335496), (63, 319520), (70, 287568), (72, 279580), (80, 251622), (84, 239640), (90, 223664), (96, 209685), (105, 191712), (112, 179730), (120, 167748), (126, 159760), (140, 143784), (144, 139790), (160, 125811), (168, 119820), (180, 111832), (210, 95856), (224, 89865), (240, 83874), (252, 79880), (280, 71892), (288, 69895), (315, 63904), (336, 59910), (360, 55916), (420, 47928), (480, 41937), (504, 39940), (560, 35946), (630, 31952), (672, 29955), (720, 27958), (840, 23964), (1008, 19970), (1120, 17973), (1260, 15976), (1440, 13979), (1680, 11982), (1997, 10080), (2016, 9985), (2520, 7988), (3360, 5991), (3994, 5040)]