31857969

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{157}}^1$

素因数の和:238

約数の個数: 48

約数和(自身を含む): 51778496

約数和(自身を除く): 19920527

約数列:

[1, 3, 11, 13, 33, 39, 43, 121, 129, 143, 157, 363, 429, 471, 473, 559, 1419, 1573, 1677, 1727, 2041, 4719, 5181, 5203, 6123, 6149, 6751, 15609, 18447, 18997, 20253, 22451, 56991, 67353, 67639, 74261, 87763, 202917, 222783, 246961, 263289, 740883, 816871, 965393, 2450613, 2896179, 10619323, 31857969]

約数ペア:

[(1, 31857969), (3, 10619323), (11, 2896179), (13, 2450613), (33, 965393), (39, 816871), (43, 740883), (121, 263289), (129, 246961), (143, 222783), (157, 202917), (363, 87763), (429, 74261), (471, 67639), (473, 67353), (559, 56991), (1419, 22451), (1573, 20253), (1677, 18997), (1727, 18447), (2041, 15609), (4719, 6751), (5181, 6149), (5203, 6123)]