21690790

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{293}}^1\times {\mathrm{673}}^1$

素因数の和:984

約数の個数: 32

約数和(自身を含む): 42801696

約数和(自身を除く): 21110906

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 293, 586, 673, 1346, 1465, 2930, 3223, 3365, 6446, 6730, 7403, 14806, 16115, 32230, 37015, 74030, 197189, 394378, 985945, 1971890, 2169079, 4338158, 10845395, 21690790]

約数ペア:

[(1, 21690790), (2, 10845395), (5, 4338158), (10, 2169079), (11, 1971890), (22, 985945), (55, 394378), (110, 197189), (293, 74030), (586, 37015), (673, 32230), (1346, 16115), (1465, 14806), (2930, 7403), (3223, 6730), (3365, 6446)]