21026768

素因数分解:

$2^4\times 7^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{241}}^1$

素因数の和:316

約数の個数: 80

約数和(自身を含む): 50413440

約数和(自身を除く): 29386672

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 38, 41, 56, 76, 82, 112, 133, 152, 164, 241, 266, 287, 304, 328, 482, 532, 574, 656, 779, 964, 1064, 1148, 1558, 1687, 1928, 2128, 2296, 3116, 3374, 3856, 4579, 4592, 5453, 6232, 6748, 9158, 9881, 10906, 12464, 13496, 18316, 19762, 21812, 26992, 32053, 36632, 39524, 43624, 64106, 69167, 73264, 79048, 87248, 128212, 138334, 158096, 187739, 256424, 276668, 375478, 512848, 553336, 750956, 1106672, 1314173, 1501912, 2628346, 3003824, 5256692, 10513384, 21026768]

約数ペア:

[(1, 21026768), (2, 10513384), (4, 5256692), (7, 3003824), (8, 2628346), (14, 1501912), (16, 1314173), (19, 1106672), (28, 750956), (38, 553336), (41, 512848), (56, 375478), (76, 276668), (82, 256424), (112, 187739), (133, 158096), (152, 138334), (164, 128212), (241, 87248), (266, 79048), (287, 73264), (304, 69167), (328, 64106), (482, 43624), (532, 39524), (574, 36632), (656, 32053), (779, 26992), (964, 21812), (1064, 19762), (1148, 18316), (1558, 13496), (1687, 12464), (1928, 10906), (2128, 9881), (2296, 9158), (3116, 6748), (3374, 6232), (3856, 5453), (4579, 4592)]