278278

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1$

素因数の和:172

約数の個数: 32

約数和(自身を含む): 564480

約数和(自身を除く): 286202

約数列:

[1, 2, 7, 11, 13, 14, 22, 26, 77, 91, 139, 143, 154, 182, 278, 286, 973, 1001, 1529, 1807, 1946, 2002, 3058, 3614, 10703, 12649, 19877, 21406, 25298, 39754, 139139, 278278]

約数ペア:

[(1, 278278), (2, 139139), (7, 39754), (11, 25298), (13, 21406), (14, 19877), (22, 12649), (26, 10703), (77, 3614), (91, 3058), (139, 2002), (143, 1946), (154, 1807), (182, 1529), (278, 1001), (286, 973)]