20864272

素因数分解:

$2^4\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{829}}^1$

素因数の和:872

約数の個数: 60

約数和(自身を含む): 47909260

約数和(自身を除く): 27044988

約数列:

[1, 2, 4, 8, 11, 13, 16, 22, 26, 44, 52, 88, 104, 121, 143, 176, 208, 242, 286, 484, 572, 829, 968, 1144, 1573, 1658, 1936, 2288, 3146, 3316, 6292, 6632, 9119, 10777, 12584, 13264, 18238, 21554, 25168, 36476, 43108, 72952, 86216, 100309, 118547, 145904, 172432, 200618, 237094, 401236, 474188, 802472, 948376, 1304017, 1604944, 1896752, 2608034, 5216068, 10432136, 20864272]

約数ペア:

[(1, 20864272), (2, 10432136), (4, 5216068), (8, 2608034), (11, 1896752), (13, 1604944), (16, 1304017), (22, 948376), (26, 802472), (44, 474188), (52, 401236), (88, 237094), (104, 200618), (121, 172432), (143, 145904), (176, 118547), (208, 100309), (242, 86216), (286, 72952), (484, 43108), (572, 36476), (829, 25168), (968, 21554), (1144, 18238), (1573, 13264), (1658, 12584), (1936, 10777), (2288, 9119), (3146, 6632), (3316, 6292)]