21518816

素因数分解:

$2^5\times {\mathrm{11}}^1\times {\mathrm{113}}^1\times {\mathrm{541}}^1$

素因数の和:675

約数の個数: 48

約数和(自身を含む): 46711728

約数和(自身を除く): 25192912

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 88, 113, 176, 226, 352, 452, 541, 904, 1082, 1243, 1808, 2164, 2486, 3616, 4328, 4972, 5951, 8656, 9944, 11902, 17312, 19888, 23804, 39776, 47608, 61133, 95216, 122266, 190432, 244532, 489064, 672463, 978128, 1344926, 1956256, 2689852, 5379704, 10759408, 21518816]

約数ペア:

[(1, 21518816), (2, 10759408), (4, 5379704), (8, 2689852), (11, 1956256), (16, 1344926), (22, 978128), (32, 672463), (44, 489064), (88, 244532), (113, 190432), (176, 122266), (226, 95216), (352, 61133), (452, 47608), (541, 39776), (904, 23804), (1082, 19888), (1243, 17312), (1808, 11902), (2164, 9944), (2486, 8656), (3616, 5951), (4328, 4972)]