21170812

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{101}}^1\times {\mathrm{139}}^1$

素因数の和:286

約数の個数: 48

約数和(自身を含む): 41983200

約数和(自身を除く): 20812388

約数列:

[1, 2, 4, 13, 26, 29, 52, 58, 101, 116, 139, 202, 278, 377, 404, 556, 754, 1313, 1508, 1807, 2626, 2929, 3614, 4031, 5252, 5858, 7228, 8062, 11716, 14039, 16124, 28078, 38077, 52403, 56156, 76154, 104806, 152308, 182507, 209612, 365014, 407131, 730028, 814262, 1628524, 5292703, 10585406, 21170812]

約数ペア:

[(1, 21170812), (2, 10585406), (4, 5292703), (13, 1628524), (26, 814262), (29, 730028), (52, 407131), (58, 365014), (101, 209612), (116, 182507), (139, 152308), (202, 104806), (278, 76154), (377, 56156), (404, 52403), (556, 38077), (754, 28078), (1313, 16124), (1508, 14039), (1807, 11716), (2626, 8062), (2929, 7228), (3614, 5858), (4031, 5252)]