18713871

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{421}}^1\times {\mathrm{449}}^1$

素因数の和:887

約数の個数: 24

約数和(自身を含む): 29624400

約数和(自身を除く): 10910529

約数列:

[1, 3, 9, 11, 33, 99, 421, 449, 1263, 1347, 3789, 4041, 4631, 4939, 13893, 14817, 41679, 44451, 189029, 567087, 1701261, 2079319, 6237957, 18713871]

約数ペア:

[(1, 18713871), (3, 6237957), (9, 2079319), (11, 1701261), (33, 567087), (99, 189029), (421, 44451), (449, 41679), (1263, 14817), (1347, 13893), (3789, 4939), (4041, 4631)]