816397340

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{839}}^1\times {\mathrm{4423}}^1$

素因数の和:5282

約数の個数: 48

約数和(自身を含む): 1872944640

約数和(自身を除く): 1056547300

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 839, 1678, 3356, 4195, 4423, 8390, 8846, 9229, 16780, 17692, 18458, 22115, 36916, 44230, 46145, 48653, 88460, 92290, 97306, 184580, 194612, 243265, 486530, 973060, 3710897, 7421794, 14843588, 18554485, 37108970, 40819867, 74217940, 81639734, 163279468, 204099335, 408198670, 816397340]

約数ペア:

[(1, 816397340), (2, 408198670), (4, 204099335), (5, 163279468), (10, 81639734), (11, 74217940), (20, 40819867), (22, 37108970), (44, 18554485), (55, 14843588), (110, 7421794), (220, 3710897), (839, 973060), (1678, 486530), (3356, 243265), (4195, 194612), (4423, 184580), (8390, 97306), (8846, 92290), (9229, 88460), (16780, 48653), (17692, 46145), (18458, 44230), (22115, 36916)]