20865416

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{61}}^1$

素因数の和:127

約数の個数: 96

約数和(自身を含む): 49014720

約数和(自身を除く): 28149304

約数列:

[1, 2, 4, 8, 11, 13, 22, 23, 26, 44, 46, 52, 61, 88, 92, 104, 122, 143, 169, 184, 244, 253, 286, 299, 338, 488, 506, 572, 598, 671, 676, 793, 1012, 1144, 1196, 1342, 1352, 1403, 1586, 1859, 2024, 2392, 2684, 2806, 3172, 3289, 3718, 3887, 5368, 5612, 6344, 6578, 7436, 7774, 8723, 10309, 11224, 13156, 14872, 15433, 15548, 17446, 18239, 20618, 26312, 30866, 31096, 34892, 36478, 41236, 42757, 61732, 69784, 72956, 82472, 85514, 113399, 123464, 145912, 171028, 200629, 226798, 237107, 342056, 401258, 453596, 474214, 802516, 907192, 948428, 1605032, 1896856, 2608177, 5216354, 10432708, 20865416]

約数ペア:

[(1, 20865416), (2, 10432708), (4, 5216354), (8, 2608177), (11, 1896856), (13, 1605032), (22, 948428), (23, 907192), (26, 802516), (44, 474214), (46, 453596), (52, 401258), (61, 342056), (88, 237107), (92, 226798), (104, 200629), (122, 171028), (143, 145912), (169, 123464), (184, 113399), (244, 85514), (253, 82472), (286, 72956), (299, 69784), (338, 61732), (488, 42757), (506, 41236), (572, 36478), (598, 34892), (671, 31096), (676, 30866), (793, 26312), (1012, 20618), (1144, 18239), (1196, 17446), (1342, 15548), (1352, 15433), (1403, 14872), (1586, 13156), (1859, 11224), (2024, 10309), (2392, 8723), (2684, 7774), (2806, 7436), (3172, 6578), (3289, 6344), (3718, 5612), (3887, 5368)]