19975428

素因数分解:

$2^2\times 3^2\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{691}}^1$

素因数の和:785

約数の個数: 72

約数和(自身を含む): 55919136

約数和(自身を除く): 35943708

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 18, 22, 33, 36, 44, 66, 73, 99, 132, 146, 198, 219, 292, 396, 438, 657, 691, 803, 876, 1314, 1382, 1606, 2073, 2409, 2628, 2764, 3212, 4146, 4818, 6219, 7227, 7601, 8292, 9636, 12438, 14454, 15202, 22803, 24876, 28908, 30404, 45606, 50443, 68409, 91212, 100886, 136818, 151329, 201772, 273636, 302658, 453987, 554873, 605316, 907974, 1109746, 1664619, 1815948, 2219492, 3329238, 4993857, 6658476, 9987714, 19975428]

約数ペア:

[(1, 19975428), (2, 9987714), (3, 6658476), (4, 4993857), (6, 3329238), (9, 2219492), (11, 1815948), (12, 1664619), (18, 1109746), (22, 907974), (33, 605316), (36, 554873), (44, 453987), (66, 302658), (73, 273636), (99, 201772), (132, 151329), (146, 136818), (198, 100886), (219, 91212), (292, 68409), (396, 50443), (438, 45606), (657, 30404), (691, 28908), (803, 24876), (876, 22803), (1314, 15202), (1382, 14454), (1606, 12438), (2073, 9636), (2409, 8292), (2628, 7601), (2764, 7227), (3212, 6219), (4146, 4818)]