20970418

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^2\times {\mathrm{71}}^1\times {\mathrm{73}}^1$

素因数の和:187

約数の個数: 48

約数和(自身を含む): 39256704

約数和(自身を除く): 18286286

約数列:

[1, 2, 7, 14, 17, 34, 71, 73, 119, 142, 146, 238, 289, 497, 511, 578, 994, 1022, 1207, 1241, 2023, 2414, 2482, 4046, 5183, 8449, 8687, 10366, 16898, 17374, 20519, 21097, 36281, 41038, 42194, 72562, 88111, 143633, 147679, 176222, 287266, 295358, 616777, 1233554, 1497887, 2995774, 10485209, 20970418]

約数ペア:

[(1, 20970418), (2, 10485209), (7, 2995774), (14, 1497887), (17, 1233554), (34, 616777), (71, 295358), (73, 287266), (119, 176222), (142, 147679), (146, 143633), (238, 88111), (289, 72562), (497, 42194), (511, 41038), (578, 36281), (994, 21097), (1022, 20519), (1207, 17374), (1241, 16898), (2023, 10366), (2414, 8687), (2482, 8449), (4046, 5183)]