31313938

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{89}}^1\times {\mathrm{197}}^1$

素因数の和:354

約数の個数: 32

約数和(自身を含む): 51321600

約数和(自身を除く): 20007662

約数列:

[1, 2, 19, 38, 47, 89, 94, 178, 197, 394, 893, 1691, 1786, 3382, 3743, 4183, 7486, 8366, 9259, 17533, 18518, 35066, 79477, 158954, 175921, 333127, 351842, 666254, 824051, 1648102, 15656969, 31313938]

約数ペア:

[(1, 31313938), (2, 15656969), (19, 1648102), (38, 824051), (47, 666254), (89, 351842), (94, 333127), (178, 175921), (197, 158954), (394, 79477), (893, 35066), (1691, 18518), (1786, 17533), (3382, 9259), (3743, 8366), (4183, 7486)]