12782920

素因数分解:

$2^3\times 5^1\times {\mathrm{313}}^1\times {\mathrm{1021}}^1$

素因数の和:1345

約数の個数: 32

約数和(自身を含む): 28881720

約数和(自身を除く): 16098800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 313, 626, 1021, 1252, 1565, 2042, 2504, 3130, 4084, 5105, 6260, 8168, 10210, 12520, 20420, 40840, 319573, 639146, 1278292, 1597865, 2556584, 3195730, 6391460, 12782920]

約数ペア:

[(1, 12782920), (2, 6391460), (4, 3195730), (5, 2556584), (8, 1597865), (10, 1278292), (20, 639146), (40, 319573), (313, 40840), (626, 20420), (1021, 12520), (1252, 10210), (1565, 8168), (2042, 6260), (2504, 5105), (3130, 4084)]