1780407

素因数分解:

$3^3\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1$

素因数の和:140

約数の個数: 32

約数和(自身を含む): 2856960

約数和(自身を除く): 1076553

約数列:

[1, 3, 9, 23, 27, 47, 61, 69, 141, 183, 207, 423, 549, 621, 1081, 1269, 1403, 1647, 2867, 3243, 4209, 8601, 9729, 12627, 25803, 29187, 37881, 65941, 77409, 197823, 593469, 1780407]

約数ペア:

[(1, 1780407), (3, 593469), (9, 197823), (23, 77409), (27, 65941), (47, 37881), (61, 29187), (69, 25803), (141, 12627), (183, 9729), (207, 8601), (423, 4209), (549, 3243), (621, 2867), (1081, 1647), (1269, 1403)]