20553932

素因数分解:

$2^2\times 7^3\times {\mathrm{71}}^1\times {\mathrm{211}}^1$

素因数の和:307

約数の個数: 48

約数和(自身を含む): 42739200

約数和(自身を除く): 22185268

約数列:

[1, 2, 4, 7, 14, 28, 49, 71, 98, 142, 196, 211, 284, 343, 422, 497, 686, 844, 994, 1372, 1477, 1988, 2954, 3479, 5908, 6958, 10339, 13916, 14981, 20678, 24353, 29962, 41356, 48706, 59924, 72373, 97412, 104867, 144746, 209734, 289492, 419468, 734069, 1468138, 2936276, 5138483, 10276966, 20553932]

約数ペア:

[(1, 20553932), (2, 10276966), (4, 5138483), (7, 2936276), (14, 1468138), (28, 734069), (49, 419468), (71, 289492), (98, 209734), (142, 144746), (196, 104867), (211, 97412), (284, 72373), (343, 59924), (422, 48706), (497, 41356), (686, 29962), (844, 24353), (994, 20678), (1372, 14981), (1477, 13916), (1988, 10339), (2954, 6958), (3479, 5908)]