20756547

素因数分解:

$3^3\times 7^2\times {\mathrm{29}}^1\times {\mathrm{541}}^1$

素因数の和:593

約数の個数: 48

約数和(自身を含む): 37072800

約数和(自身を除く): 16316253

約数列:

[1, 3, 7, 9, 21, 27, 29, 49, 63, 87, 147, 189, 203, 261, 441, 541, 609, 783, 1323, 1421, 1623, 1827, 3787, 4263, 4869, 5481, 11361, 12789, 14607, 15689, 26509, 34083, 38367, 47067, 79527, 102249, 109823, 141201, 238581, 329469, 423603, 715743, 768761, 988407, 2306283, 2965221, 6918849, 20756547]

約数ペア:

[(1, 20756547), (3, 6918849), (7, 2965221), (9, 2306283), (21, 988407), (27, 768761), (29, 715743), (49, 423603), (63, 329469), (87, 238581), (147, 141201), (189, 109823), (203, 102249), (261, 79527), (441, 47067), (541, 38367), (609, 34083), (783, 26509), (1323, 15689), (1421, 14607), (1623, 12789), (1827, 11361), (3787, 5481), (4263, 4869)]