1402640

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{197}}^1$

素因数の和:299

約数の個数: 40

約数和(自身を含む): 3314520

約数和(自身を除く): 1911880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 178, 197, 356, 394, 445, 712, 788, 890, 985, 1424, 1576, 1780, 1970, 3152, 3560, 3940, 7120, 7880, 15760, 17533, 35066, 70132, 87665, 140264, 175330, 280528, 350660, 701320, 1402640]

約数ペア:

[(1, 1402640), (2, 701320), (4, 350660), (5, 280528), (8, 175330), (10, 140264), (16, 87665), (20, 70132), (40, 35066), (80, 17533), (89, 15760), (178, 7880), (197, 7120), (356, 3940), (394, 3560), (445, 3152), (712, 1970), (788, 1780), (890, 1576), (985, 1424)]