21906956

素因数分解:

$2^2\times {\mathrm{31}}^2\times {\mathrm{41}}^1\times {\mathrm{139}}^1$

素因数の和:246

約数の個数: 36

約数和(自身を含む): 40871880

約数和(自身を除く): 18964924

約数列:

[1, 2, 4, 31, 41, 62, 82, 124, 139, 164, 278, 556, 961, 1271, 1922, 2542, 3844, 4309, 5084, 5699, 8618, 11398, 17236, 22796, 39401, 78802, 133579, 157604, 176669, 267158, 353338, 534316, 706676, 5476739, 10953478, 21906956]

約数ペア:

[(1, 21906956), (2, 10953478), (4, 5476739), (31, 706676), (41, 534316), (62, 353338), (82, 267158), (124, 176669), (139, 157604), (164, 133579), (278, 78802), (556, 39401), (961, 22796), (1271, 17236), (1922, 11398), (2542, 8618), (3844, 5699), (4309, 5084)]