18013821

素因数分解:

$3^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{67}}^1$

素因数の和:174

約数の個数: 48

約数和(自身を含む): 29767680

約数和(自身を除く): 11753859

約数列:

[1, 3, 7, 21, 31, 49, 59, 67, 93, 147, 177, 201, 217, 413, 469, 651, 1239, 1407, 1519, 1829, 2077, 2891, 3283, 3953, 4557, 5487, 6231, 8673, 9849, 11859, 12803, 14539, 27671, 38409, 43617, 83013, 89621, 101773, 122543, 193697, 268863, 305319, 367629, 581091, 857801, 2573403, 6004607, 18013821]

約数ペア:

[(1, 18013821), (3, 6004607), (7, 2573403), (21, 857801), (31, 581091), (49, 367629), (59, 305319), (67, 268863), (93, 193697), (147, 122543), (177, 101773), (201, 89621), (217, 83013), (413, 43617), (469, 38409), (651, 27671), (1239, 14539), (1407, 12803), (1519, 11859), (1829, 9849), (2077, 8673), (2891, 6231), (3283, 5487), (3953, 4557)]