21422709

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{1627}}^1$

素因数の和:1670

約数の個数: 48

約数和(自身を含む): 40634880

約数和(自身を除く): 19212171

約数列:

[1, 3, 7, 9, 11, 19, 21, 33, 57, 63, 77, 99, 133, 171, 209, 231, 399, 627, 693, 1197, 1463, 1627, 1881, 4389, 4881, 11389, 13167, 14643, 17897, 30913, 34167, 53691, 92739, 102501, 125279, 161073, 216391, 278217, 340043, 375837, 649173, 1020129, 1127511, 1947519, 2380301, 3060387, 7140903, 21422709]

約数ペア:

[(1, 21422709), (3, 7140903), (7, 3060387), (9, 2380301), (11, 1947519), (19, 1127511), (21, 1020129), (33, 649173), (57, 375837), (63, 340043), (77, 278217), (99, 216391), (133, 161073), (171, 125279), (209, 102501), (231, 92739), (399, 53691), (627, 34167), (693, 30913), (1197, 17897), (1463, 14643), (1627, 13167), (1881, 11389), (4389, 4881)]