20359640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1$

素因数の和:169

約数の個数: 128

約数和(自身を含む): 57024000

約数和(自身を除く): 36664360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 19, 20, 28, 35, 38, 40, 43, 56, 70, 76, 86, 89, 95, 133, 140, 152, 172, 178, 190, 215, 266, 280, 301, 344, 356, 380, 430, 445, 532, 602, 623, 665, 712, 760, 817, 860, 890, 1064, 1204, 1246, 1330, 1505, 1634, 1691, 1720, 1780, 2408, 2492, 2660, 3010, 3115, 3268, 3382, 3560, 3827, 4085, 4984, 5320, 5719, 6020, 6230, 6536, 6764, 7654, 8170, 8455, 11438, 11837, 12040, 12460, 13528, 15308, 16340, 16910, 19135, 22876, 23674, 24920, 26789, 28595, 30616, 32680, 33820, 38270, 45752, 47348, 53578, 57190, 59185, 67640, 72713, 76540, 94696, 107156, 114380, 118370, 133945, 145426, 153080, 214312, 228760, 236740, 267890, 290852, 363565, 473480, 508991, 535780, 581704, 727130, 1017982, 1071560, 1454260, 2035964, 2544955, 2908520, 4071928, 5089910, 10179820, 20359640]

約数ペア:

[(1, 20359640), (2, 10179820), (4, 5089910), (5, 4071928), (7, 2908520), (8, 2544955), (10, 2035964), (14, 1454260), (19, 1071560), (20, 1017982), (28, 727130), (35, 581704), (38, 535780), (40, 508991), (43, 473480), (56, 363565), (70, 290852), (76, 267890), (86, 236740), (89, 228760), (95, 214312), (133, 153080), (140, 145426), (152, 133945), (172, 118370), (178, 114380), (190, 107156), (215, 94696), (266, 76540), (280, 72713), (301, 67640), (344, 59185), (356, 57190), (380, 53578), (430, 47348), (445, 45752), (532, 38270), (602, 33820), (623, 32680), (665, 30616), (712, 28595), (760, 26789), (817, 24920), (860, 23674), (890, 22876), (1064, 19135), (1204, 16910), (1246, 16340), (1330, 15308), (1505, 13528), (1634, 12460), (1691, 12040), (1720, 11837), (1780, 11438), (2408, 8455), (2492, 8170), (2660, 7654), (3010, 6764), (3115, 6536), (3268, 6230), (3382, 6020), (3560, 5719), (3827, 5320), (4085, 4984)]