21151827

素因数分解:

$3^3\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{683}}^1$

素因数の和:760

約数の個数: 32

約数和(自身を含む): 33269760

約数和(自身を除く): 12117933

約数列:

[1, 3, 9, 27, 31, 37, 93, 111, 279, 333, 683, 837, 999, 1147, 2049, 3441, 6147, 10323, 18441, 21173, 25271, 30969, 63519, 75813, 190557, 227439, 571671, 682317, 783401, 2350203, 7050609, 21151827]

約数ペア:

[(1, 21151827), (3, 7050609), (9, 2350203), (27, 783401), (31, 682317), (37, 571671), (93, 227439), (111, 190557), (279, 75813), (333, 63519), (683, 30969), (837, 25271), (999, 21173), (1147, 18441), (2049, 10323), (3441, 6147)]