20851809

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1$

素因数の和:182

約数の個数: 48

約数和(自身を含む): 33707520

約数和(自身を除く): 12855711

約数列:

[1, 3, 11, 17, 31, 33, 51, 93, 109, 121, 187, 327, 341, 363, 527, 561, 1023, 1199, 1581, 1853, 2057, 3379, 3597, 3751, 5559, 5797, 6171, 10137, 11253, 13189, 17391, 20383, 37169, 39567, 57443, 61149, 63767, 111507, 172329, 191301, 224213, 408859, 631873, 672639, 1226577, 1895619, 6950603, 20851809]

約数ペア:

[(1, 20851809), (3, 6950603), (11, 1895619), (17, 1226577), (31, 672639), (33, 631873), (51, 408859), (93, 224213), (109, 191301), (121, 172329), (187, 111507), (327, 63767), (341, 61149), (363, 57443), (527, 39567), (561, 37169), (1023, 20383), (1199, 17391), (1581, 13189), (1853, 11253), (2057, 10137), (3379, 6171), (3597, 5797), (3751, 5559)]