21449680

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{38303}}^1$

素因数の和:38323

約数の個数: 40

約数和(自身を含む): 56996352

約数和(自身を除く): 35546672

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 38303, 76606, 153212, 191515, 268121, 306424, 383030, 536242, 612848, 766060, 1072484, 1340605, 1532120, 2144968, 2681210, 3064240, 4289936, 5362420, 10724840, 21449680]

約数ペア:

[(1, 21449680), (2, 10724840), (4, 5362420), (5, 4289936), (7, 3064240), (8, 2681210), (10, 2144968), (14, 1532120), (16, 1340605), (20, 1072484), (28, 766060), (35, 612848), (40, 536242), (56, 383030), (70, 306424), (80, 268121), (112, 191515), (140, 153212), (280, 76606), (560, 38303)]