21365428

素因数分解:

$2^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{503}}^1$

素因数の和:592

約数の個数: 48

約数和(自身を含む): 45045504

約数和(自身を除く): 23680076

約数列:

[1, 2, 4, 7, 14, 28, 37, 41, 74, 82, 148, 164, 259, 287, 503, 518, 574, 1006, 1036, 1148, 1517, 2012, 3034, 3521, 6068, 7042, 10619, 14084, 18611, 20623, 21238, 37222, 41246, 42476, 74444, 82492, 130277, 144361, 260554, 288722, 521108, 577444, 763051, 1526102, 3052204, 5341357, 10682714, 21365428]

約数ペア:

[(1, 21365428), (2, 10682714), (4, 5341357), (7, 3052204), (14, 1526102), (28, 763051), (37, 577444), (41, 521108), (74, 288722), (82, 260554), (148, 144361), (164, 130277), (259, 82492), (287, 74444), (503, 42476), (518, 41246), (574, 37222), (1006, 21238), (1036, 20623), (1148, 18611), (1517, 14084), (2012, 10619), (3034, 7042), (3521, 6068)]