21511840

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{19207}}^1$

素因数の和:19229

約数の個数: 48

約数和(自身を含む): 58084992

約数和(自身を除く): 36573152

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 19207, 38414, 76828, 96035, 134449, 153656, 192070, 268898, 307312, 384140, 537796, 614624, 672245, 768280, 1075592, 1344490, 1536560, 2151184, 2688980, 3073120, 4302368, 5377960, 10755920, 21511840]

約数ペア:

[(1, 21511840), (2, 10755920), (4, 5377960), (5, 4302368), (7, 3073120), (8, 2688980), (10, 2151184), (14, 1536560), (16, 1344490), (20, 1075592), (28, 768280), (32, 672245), (35, 614624), (40, 537796), (56, 384140), (70, 307312), (80, 268898), (112, 192070), (140, 153656), (160, 134449), (224, 96035), (280, 76828), (560, 38414), (1120, 19207)]