21464880

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{5261}}^1$

素因数の和:5294

約数の個数: 80

約数和(自身を含む): 70468704

約数和(自身を除く): 49003824

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 17, 20, 24, 30, 34, 40, 48, 51, 60, 68, 80, 85, 102, 120, 136, 170, 204, 240, 255, 272, 340, 408, 510, 680, 816, 1020, 1360, 2040, 4080, 5261, 10522, 15783, 21044, 26305, 31566, 42088, 52610, 63132, 78915, 84176, 89437, 105220, 126264, 157830, 178874, 210440, 252528, 268311, 315660, 357748, 420880, 447185, 536622, 631320, 715496, 894370, 1073244, 1262640, 1341555, 1430992, 1788740, 2146488, 2683110, 3577480, 4292976, 5366220, 7154960, 10732440, 21464880]

約数ペア:

[(1, 21464880), (2, 10732440), (3, 7154960), (4, 5366220), (5, 4292976), (6, 3577480), (8, 2683110), (10, 2146488), (12, 1788740), (15, 1430992), (16, 1341555), (17, 1262640), (20, 1073244), (24, 894370), (30, 715496), (34, 631320), (40, 536622), (48, 447185), (51, 420880), (60, 357748), (68, 315660), (80, 268311), (85, 252528), (102, 210440), (120, 178874), (136, 157830), (170, 126264), (204, 105220), (240, 89437), (255, 84176), (272, 78915), (340, 63132), (408, 52610), (510, 42088), (680, 31566), (816, 26305), (1020, 21044), (1360, 15783), (2040, 10522), (4080, 5261)]