21000658216

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{181}}^1\times {\mathrm{353737}}^1$

素因数の和:353965

約数の個数: 32

約数和(自身を含む): 40559599080

約数和(自身を除く): 19558940864

約数列:

[1, 2, 4, 8, 41, 82, 164, 181, 328, 362, 724, 1448, 7421, 14842, 29684, 59368, 353737, 707474, 1414948, 2829896, 14503217, 29006434, 58012868, 64026397, 116025736, 128052794, 256105588, 512211176, 2625082277, 5250164554, 10500329108, 21000658216]

約数ペア:

[(1, 21000658216), (2, 10500329108), (4, 5250164554), (8, 2625082277), (41, 512211176), (82, 256105588), (164, 128052794), (181, 116025736), (328, 64026397), (362, 58012868), (724, 29006434), (1448, 14503217), (7421, 2829896), (14842, 1414948), (29684, 707474), (59368, 353737)]