20077904

素因数分解:

$2^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{379}}^1$

素因数の和:448

約数の個数: 80

約数和(自身を含む): 49758720

約数和(自身を除く): 29680816

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 43, 44, 56, 77, 86, 88, 112, 154, 172, 176, 301, 308, 344, 379, 473, 602, 616, 688, 758, 946, 1204, 1232, 1516, 1892, 2408, 2653, 3032, 3311, 3784, 4169, 4816, 5306, 6064, 6622, 7568, 8338, 10612, 13244, 16297, 16676, 21224, 26488, 29183, 32594, 33352, 42448, 52976, 58366, 65188, 66704, 114079, 116732, 130376, 179267, 228158, 233464, 260752, 358534, 456316, 466928, 717068, 912632, 1254869, 1434136, 1825264, 2509738, 2868272, 5019476, 10038952, 20077904]

約数ペア:

[(1, 20077904), (2, 10038952), (4, 5019476), (7, 2868272), (8, 2509738), (11, 1825264), (14, 1434136), (16, 1254869), (22, 912632), (28, 717068), (43, 466928), (44, 456316), (56, 358534), (77, 260752), (86, 233464), (88, 228158), (112, 179267), (154, 130376), (172, 116732), (176, 114079), (301, 66704), (308, 65188), (344, 58366), (379, 52976), (473, 42448), (602, 33352), (616, 32594), (688, 29183), (758, 26488), (946, 21224), (1204, 16676), (1232, 16297), (1516, 13244), (1892, 10612), (2408, 8338), (2653, 7568), (3032, 6622), (3311, 6064), (3784, 5306), (4169, 4816)]