31979223

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{173}}^1$

素因数の和:268

約数の個数: 48

約数和(自身を含む): 52116480

約数和(自身を除く): 20137257

約数列:

[1, 3, 9, 19, 23, 47, 57, 69, 141, 171, 173, 207, 423, 437, 519, 893, 1081, 1311, 1557, 2679, 3243, 3287, 3933, 3979, 8037, 8131, 9729, 9861, 11937, 20539, 24393, 29583, 35811, 61617, 73179, 75601, 154489, 184851, 187013, 226803, 463467, 561039, 680409, 1390401, 1683117, 3553247, 10659741, 31979223]

約数ペア:

[(1, 31979223), (3, 10659741), (9, 3553247), (19, 1683117), (23, 1390401), (47, 680409), (57, 561039), (69, 463467), (141, 226803), (171, 187013), (173, 184851), (207, 154489), (423, 75601), (437, 73179), (519, 61617), (893, 35811), (1081, 29583), (1311, 24393), (1557, 20539), (2679, 11937), (3243, 9861), (3287, 9729), (3933, 8131), (3979, 8037)]