20713869

素因数分解:

$3^2\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{827}}^1$

素因数の和:878

約数の個数: 36

約数和(自身を含む): 34358688

約数和(自身を除く): 13644819

約数列:

[1, 3, 9, 11, 23, 33, 69, 99, 121, 207, 253, 363, 759, 827, 1089, 2277, 2481, 2783, 7443, 8349, 9097, 19021, 25047, 27291, 57063, 81873, 100067, 171189, 209231, 300201, 627693, 900603, 1883079, 2301541, 6904623, 20713869]

約数ペア:

[(1, 20713869), (3, 6904623), (9, 2301541), (11, 1883079), (23, 900603), (33, 627693), (69, 300201), (99, 209231), (121, 171189), (207, 100067), (253, 81873), (363, 57063), (759, 27291), (827, 25047), (1089, 19021), (2277, 9097), (2481, 8349), (2783, 7443)]