21926216

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{4903}}^1$

素因数の和:4965

約数の個数: 32

約数和(自身を含む): 45312960

約数和(自身を除く): 23386744

約数列:

[1, 2, 4, 8, 13, 26, 43, 52, 86, 104, 172, 344, 559, 1118, 2236, 4472, 4903, 9806, 19612, 39224, 63739, 127478, 210829, 254956, 421658, 509912, 843316, 1686632, 2740777, 5481554, 10963108, 21926216]

約数ペア:

[(1, 21926216), (2, 10963108), (4, 5481554), (8, 2740777), (13, 1686632), (26, 843316), (43, 509912), (52, 421658), (86, 254956), (104, 210829), (172, 127478), (344, 63739), (559, 39224), (1118, 19612), (2236, 9806), (4472, 4903)]