6656920

素因数分解:

$2^3\times 5^1\times {\mathrm{163}}^1\times {\mathrm{1021}}^1$

素因数の和:1195

約数の個数: 32

約数和(自身を含む): 15084720

約数和(自身を除く): 8427800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 163, 326, 652, 815, 1021, 1304, 1630, 2042, 3260, 4084, 5105, 6520, 8168, 10210, 20420, 40840, 166423, 332846, 665692, 832115, 1331384, 1664230, 3328460, 6656920]

約数ペア:

[(1, 6656920), (2, 3328460), (4, 1664230), (5, 1331384), (8, 832115), (10, 665692), (20, 332846), (40, 166423), (163, 40840), (326, 20420), (652, 10210), (815, 8168), (1021, 6520), (1304, 5105), (1630, 4084), (2042, 3260)]