21988876

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{193}}^1\times {\mathrm{313}}^1$

素因数の和:530

約数の個数: 48

約数和(自身を含む): 47758144

約数和(自身を除く): 25769268

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 91, 182, 193, 313, 364, 386, 626, 772, 1252, 1351, 2191, 2509, 2702, 4069, 4382, 5018, 5404, 8138, 8764, 10036, 16276, 17563, 28483, 35126, 56966, 60409, 70252, 113932, 120818, 241636, 422863, 785317, 845726, 1570634, 1691452, 3141268, 5497219, 10994438, 21988876]

約数ペア:

[(1, 21988876), (2, 10994438), (4, 5497219), (7, 3141268), (13, 1691452), (14, 1570634), (26, 845726), (28, 785317), (52, 422863), (91, 241636), (182, 120818), (193, 113932), (313, 70252), (364, 60409), (386, 56966), (626, 35126), (772, 28483), (1252, 17563), (1351, 16276), (2191, 10036), (2509, 8764), (2702, 8138), (4069, 5404), (4382, 5018)]