21074078

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1\times {\mathrm{107}}^1$

素因数の和:272

約数の個数: 32

約数和(自身を含む): 34525440

約数和(自身を除く): 13451362

約数列:

[1, 2, 19, 38, 71, 73, 107, 142, 146, 214, 1349, 1387, 2033, 2698, 2774, 4066, 5183, 7597, 7811, 10366, 15194, 15622, 98477, 144343, 148409, 196954, 288686, 296818, 554581, 1109162, 10537039, 21074078]

約数ペア:

[(1, 21074078), (2, 10537039), (19, 1109162), (38, 554581), (71, 296818), (73, 288686), (107, 196954), (142, 148409), (146, 144343), (214, 98477), (1349, 15622), (1387, 15194), (2033, 10366), (2698, 7811), (2774, 7597), (4066, 5183)]