28870471

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1\times {\mathrm{83}}^1$

素因数の和:223

約数の個数: 32

約数和(自身を含む): 36771840

約数和(自身を除く): 7901369

約数列:

[1, 7, 17, 37, 79, 83, 119, 259, 553, 581, 629, 1343, 1411, 2923, 3071, 4403, 6557, 9401, 9877, 20461, 21497, 45899, 49691, 52207, 111469, 242609, 347837, 365449, 780283, 1698263, 4124353, 28870471]

約数ペア:

[(1, 28870471), (7, 4124353), (17, 1698263), (37, 780283), (79, 365449), (83, 347837), (119, 242609), (259, 111469), (553, 52207), (581, 49691), (629, 45899), (1343, 21497), (1411, 20461), (2923, 9877), (3071, 9401), (4403, 6557)]