21353948

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1$

素因数の和:171

約数の個数: 96

約数和(自身を含む): 50803200

約数和(自身を除く): 29449252

約数列:

[1, 2, 4, 7, 11, 14, 19, 22, 28, 38, 41, 44, 76, 77, 82, 89, 133, 154, 164, 178, 209, 266, 287, 308, 356, 418, 451, 532, 574, 623, 779, 836, 902, 979, 1148, 1246, 1463, 1558, 1691, 1804, 1958, 2492, 2926, 3116, 3157, 3382, 3649, 3916, 5453, 5852, 6314, 6764, 6853, 7298, 8569, 10906, 11837, 12628, 13706, 14596, 17138, 18601, 21812, 23674, 25543, 27412, 34276, 37202, 40139, 47348, 51086, 59983, 69331, 74404, 80278, 102172, 119966, 130207, 138662, 160556, 239932, 260414, 277324, 280973, 485317, 520828, 561946, 762641, 970634, 1123892, 1525282, 1941268, 3050564, 5338487, 10676974, 21353948]

約数ペア:

[(1, 21353948), (2, 10676974), (4, 5338487), (7, 3050564), (11, 1941268), (14, 1525282), (19, 1123892), (22, 970634), (28, 762641), (38, 561946), (41, 520828), (44, 485317), (76, 280973), (77, 277324), (82, 260414), (89, 239932), (133, 160556), (154, 138662), (164, 130207), (178, 119966), (209, 102172), (266, 80278), (287, 74404), (308, 69331), (356, 59983), (418, 51086), (451, 47348), (532, 40139), (574, 37202), (623, 34276), (779, 27412), (836, 25543), (902, 23674), (979, 21812), (1148, 18601), (1246, 17138), (1463, 14596), (1558, 13706), (1691, 12628), (1804, 11837), (1958, 10906), (2492, 8569), (2926, 7298), (3116, 6853), (3157, 6764), (3382, 6314), (3649, 5852), (3916, 5453)]