21399120

素因数分解:

$2^4\times 3^3\times 5^1\times {\mathrm{9907}}^1$

素因数の和:9929

約数の個数: 80

約数和(自身を含む): 73715520

約数和(自身を除く): 52316400

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 36, 40, 45, 48, 54, 60, 72, 80, 90, 108, 120, 135, 144, 180, 216, 240, 270, 360, 432, 540, 720, 1080, 2160, 9907, 19814, 29721, 39628, 49535, 59442, 79256, 89163, 99070, 118884, 148605, 158512, 178326, 198140, 237768, 267489, 297210, 356652, 396280, 445815, 475536, 534978, 594420, 713304, 792560, 891630, 1069956, 1188840, 1337445, 1426608, 1783260, 2139912, 2377680, 2674890, 3566520, 4279824, 5349780, 7133040, 10699560, 21399120]

約数ペア:

[(1, 21399120), (2, 10699560), (3, 7133040), (4, 5349780), (5, 4279824), (6, 3566520), (8, 2674890), (9, 2377680), (10, 2139912), (12, 1783260), (15, 1426608), (16, 1337445), (18, 1188840), (20, 1069956), (24, 891630), (27, 792560), (30, 713304), (36, 594420), (40, 534978), (45, 475536), (48, 445815), (54, 396280), (60, 356652), (72, 297210), (80, 267489), (90, 237768), (108, 198140), (120, 178326), (135, 158512), (144, 148605), (180, 118884), (216, 99070), (240, 89163), (270, 79256), (360, 59442), (432, 49535), (540, 39628), (720, 29721), (1080, 19814), (2160, 9907)]