21279423

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{31}}^2\times {\mathrm{61}}^1$

素因数の和:148

約数の個数: 36

約数和(自身を含む): 32753112

約数和(自身を除く): 11473689

約数列:

[1, 3, 11, 31, 33, 61, 93, 121, 183, 341, 363, 671, 961, 1023, 1891, 2013, 2883, 3751, 5673, 7381, 10571, 11253, 20801, 22143, 31713, 58621, 62403, 116281, 175863, 228811, 348843, 644831, 686433, 1934493, 7093141, 21279423]

約数ペア:

[(1, 21279423), (3, 7093141), (11, 1934493), (31, 686433), (33, 644831), (61, 348843), (93, 228811), (121, 175863), (183, 116281), (341, 62403), (363, 58621), (671, 31713), (961, 22143), (1023, 20801), (1891, 11253), (2013, 10571), (2883, 7381), (3751, 5673)]