71306221

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{191}}^1\times {\mathrm{401}}^1$

素因数の和:625

約数の個数: 24

約数和(自身を含む): 87989760

約数和(自身を除く): 16683539

約数列:

[1, 7, 19, 49, 133, 191, 401, 931, 1337, 2807, 3629, 7619, 9359, 19649, 25403, 53333, 76591, 177821, 373331, 536137, 1455229, 3752959, 10186603, 71306221]

約数ペア:

[(1, 71306221), (7, 10186603), (19, 3752959), (49, 1455229), (133, 536137), (191, 373331), (401, 177821), (931, 76591), (1337, 53333), (2807, 25403), (3629, 19649), (7619, 9359)]