637420721

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{107}}^1\times {\mathrm{953}}^1$

素因数の和:1133

約数の個数: 32

約数和(自身を含む): 791285760

約数和(自身を除く): 153865039

約数列:

[1, 7, 19, 47, 107, 133, 329, 749, 893, 953, 2033, 5029, 6251, 6671, 14231, 18107, 35203, 44791, 95551, 101971, 126749, 313537, 668857, 713797, 851029, 1937449, 4792637, 5957203, 13562143, 33548459, 91060103, 637420721]

約数ペア:

[(1, 637420721), (7, 91060103), (19, 33548459), (47, 13562143), (107, 5957203), (133, 4792637), (329, 1937449), (749, 851029), (893, 713797), (953, 668857), (2033, 313537), (5029, 126749), (6251, 101971), (6671, 95551), (14231, 44791), (18107, 35203)]