21980266

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{2693}}^1$

素因数の和:2766

約数の個数: 32

約数和(自身を含む): 41897088

約数和(自身を除く): 19916822

約数列:

[1, 2, 7, 11, 14, 22, 53, 77, 106, 154, 371, 583, 742, 1166, 2693, 4081, 5386, 8162, 18851, 29623, 37702, 59246, 142729, 207361, 285458, 414722, 999103, 1570019, 1998206, 3140038, 10990133, 21980266]

約数ペア:

[(1, 21980266), (2, 10990133), (7, 3140038), (11, 1998206), (14, 1570019), (22, 999103), (53, 414722), (77, 285458), (106, 207361), (154, 142729), (371, 59246), (583, 37702), (742, 29623), (1166, 18851), (2693, 8162), (4081, 5386)]