66778640

素因数分解:

$2^4\times 5^1\times {\mathrm{307}}^1\times {\mathrm{2719}}^1$

素因数の和:3039

約数の個数: 40

約数和(自身を含む): 155823360

約数和(自身を除く): 89044720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 307, 614, 1228, 1535, 2456, 2719, 3070, 4912, 5438, 6140, 10876, 12280, 13595, 21752, 24560, 27190, 43504, 54380, 108760, 217520, 834733, 1669466, 3338932, 4173665, 6677864, 8347330, 13355728, 16694660, 33389320, 66778640]

約数ペア:

[(1, 66778640), (2, 33389320), (4, 16694660), (5, 13355728), (8, 8347330), (10, 6677864), (16, 4173665), (20, 3338932), (40, 1669466), (80, 834733), (307, 217520), (614, 108760), (1228, 54380), (1535, 43504), (2456, 27190), (2719, 24560), (3070, 21752), (4912, 13595), (5438, 12280), (6140, 10876)]