21308518

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{179}}^1\times {\mathrm{773}}^1$

素因数の和:972

約数の個数: 32

約数和(自身を含む): 40124160

約数和(自身を除く): 18815642

約数列:

[1, 2, 7, 11, 14, 22, 77, 154, 179, 358, 773, 1253, 1546, 1969, 2506, 3938, 5411, 8503, 10822, 13783, 17006, 27566, 59521, 119042, 138367, 276734, 968569, 1522037, 1937138, 3044074, 10654259, 21308518]

約数ペア:

[(1, 21308518), (2, 10654259), (7, 3044074), (11, 1937138), (14, 1522037), (22, 968569), (77, 276734), (154, 138367), (179, 119042), (358, 59521), (773, 27566), (1253, 17006), (1546, 13783), (1969, 10822), (2506, 8503), (3938, 5411)]