20417904

素因数分解:

$2^4\times 3^2\times {\mathrm{13}}^2\times {\mathrm{839}}^1$

素因数の和:879

約数の個数: 90

約数和(自身を含む): 61949160

約数和(自身を除く): 41531256

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 18, 24, 26, 36, 39, 48, 52, 72, 78, 104, 117, 144, 156, 169, 208, 234, 312, 338, 468, 507, 624, 676, 839, 936, 1014, 1352, 1521, 1678, 1872, 2028, 2517, 2704, 3042, 3356, 4056, 5034, 6084, 6712, 7551, 8112, 10068, 10907, 12168, 13424, 15102, 20136, 21814, 24336, 30204, 32721, 40272, 43628, 60408, 65442, 87256, 98163, 120816, 130884, 141791, 174512, 196326, 261768, 283582, 392652, 425373, 523536, 567164, 785304, 850746, 1134328, 1276119, 1570608, 1701492, 2268656, 2552238, 3402984, 5104476, 6805968, 10208952, 20417904]

約数ペア:

[(1, 20417904), (2, 10208952), (3, 6805968), (4, 5104476), (6, 3402984), (8, 2552238), (9, 2268656), (12, 1701492), (13, 1570608), (16, 1276119), (18, 1134328), (24, 850746), (26, 785304), (36, 567164), (39, 523536), (48, 425373), (52, 392652), (72, 283582), (78, 261768), (104, 196326), (117, 174512), (144, 141791), (156, 130884), (169, 120816), (208, 98163), (234, 87256), (312, 65442), (338, 60408), (468, 43628), (507, 40272), (624, 32721), (676, 30204), (839, 24336), (936, 21814), (1014, 20136), (1352, 15102), (1521, 13424), (1678, 12168), (1872, 10907), (2028, 10068), (2517, 8112), (2704, 7551), (3042, 6712), (3356, 6084), (4056, 5034)]