1389290

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{223}}^1$

素因数の和:326

約数の個数: 32

約数和(自身を含む): 2903040

約数和(自身を除く): 1513750

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 89, 178, 223, 445, 446, 623, 890, 1115, 1246, 1561, 2230, 3115, 3122, 6230, 7805, 15610, 19847, 39694, 99235, 138929, 198470, 277858, 694645, 1389290]

約数ペア:

[(1, 1389290), (2, 694645), (5, 277858), (7, 198470), (10, 138929), (14, 99235), (35, 39694), (70, 19847), (89, 15610), (178, 7805), (223, 6230), (445, 3122), (446, 3115), (623, 2230), (890, 1561), (1115, 1246)]