20951748

素因数分解:

$2^2\times 3^2\times {\mathrm{53}}^1\times {\mathrm{79}}^1\times {\mathrm{139}}^1$

素因数の和:281

約数の個数: 72

約数和(自身を含む): 55036800

約数和(自身を除く): 34085052

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 53, 79, 106, 139, 158, 159, 212, 237, 278, 316, 318, 417, 474, 477, 556, 636, 711, 834, 948, 954, 1251, 1422, 1668, 1908, 2502, 2844, 4187, 5004, 7367, 8374, 10981, 12561, 14734, 16748, 21962, 22101, 25122, 29468, 32943, 37683, 43924, 44202, 50244, 65886, 66303, 75366, 88404, 98829, 131772, 132606, 150732, 197658, 265212, 395316, 581993, 1163986, 1745979, 2327972, 3491958, 5237937, 6983916, 10475874, 20951748]

約数ペア:

[(1, 20951748), (2, 10475874), (3, 6983916), (4, 5237937), (6, 3491958), (9, 2327972), (12, 1745979), (18, 1163986), (36, 581993), (53, 395316), (79, 265212), (106, 197658), (139, 150732), (158, 132606), (159, 131772), (212, 98829), (237, 88404), (278, 75366), (316, 66303), (318, 65886), (417, 50244), (474, 44202), (477, 43924), (556, 37683), (636, 32943), (711, 29468), (834, 25122), (948, 22101), (954, 21962), (1251, 16748), (1422, 14734), (1668, 12561), (1908, 10981), (2502, 8374), (2844, 7367), (4187, 5004)]