168989821

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{401}}^1\times {\mathrm{421}}^1$

素因数の和:853

約数の個数: 32

約数和(自身を含む): 228001536

約数和(自身を除く): 59011715

約数列:

[1, 7, 11, 13, 77, 91, 143, 401, 421, 1001, 2807, 2947, 4411, 4631, 5213, 5473, 30877, 32417, 36491, 38311, 57343, 60203, 168821, 401401, 421421, 1181747, 1857031, 2194673, 12999217, 15362711, 24141403, 168989821]

約数ペア:

[(1, 168989821), (7, 24141403), (11, 15362711), (13, 12999217), (77, 2194673), (91, 1857031), (143, 1181747), (401, 421421), (421, 401401), (1001, 168821), (2807, 60203), (2947, 57343), (4411, 38311), (4631, 36491), (5213, 32417), (5473, 30877)]