1380498760

素因数分解:

$2^3\times 5^1\times {\mathrm{389}}^1\times {\mathrm{88721}}^1$

素因数の和:89121

約数の個数: 32

約数和(自身を含む): 3114142200

約数和(自身を除く): 1733643440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 389, 778, 1556, 1945, 3112, 3890, 7780, 15560, 88721, 177442, 354884, 443605, 709768, 887210, 1774420, 3548840, 34512469, 69024938, 138049876, 172562345, 276099752, 345124690, 690249380, 1380498760]

約数ペア:

[(1, 1380498760), (2, 690249380), (4, 345124690), (5, 276099752), (8, 172562345), (10, 138049876), (20, 69024938), (40, 34512469), (389, 3548840), (778, 1774420), (1556, 887210), (1945, 709768), (3112, 443605), (3890, 354884), (7780, 177442), (15560, 88721)]