20855464

素因数分解:

$2^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{1153}}^1$

素因数の和:1202

約数の個数: 64

約数和(自身を含む): 49852800

約数和(自身を除く): 28997336

約数列:

[1, 2, 4, 7, 8, 14, 17, 19, 28, 34, 38, 56, 68, 76, 119, 133, 136, 152, 238, 266, 323, 476, 532, 646, 952, 1064, 1153, 1292, 2261, 2306, 2584, 4522, 4612, 8071, 9044, 9224, 16142, 18088, 19601, 21907, 32284, 39202, 43814, 64568, 78404, 87628, 137207, 153349, 156808, 175256, 274414, 306698, 372419, 548828, 613396, 744838, 1097656, 1226792, 1489676, 2606933, 2979352, 5213866, 10427732, 20855464]

約数ペア:

[(1, 20855464), (2, 10427732), (4, 5213866), (7, 2979352), (8, 2606933), (14, 1489676), (17, 1226792), (19, 1097656), (28, 744838), (34, 613396), (38, 548828), (56, 372419), (68, 306698), (76, 274414), (119, 175256), (133, 156808), (136, 153349), (152, 137207), (238, 87628), (266, 78404), (323, 64568), (476, 43814), (532, 39202), (646, 32284), (952, 21907), (1064, 19601), (1153, 18088), (1292, 16142), (2261, 9224), (2306, 9044), (2584, 8071), (4522, 4612)]