21682276

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{101}}^1$

素因数の和:181

約数の個数: 96

約数和(自身を含む): 51819264

約数和(自身を除く): 30136988

約数列:

[1, 2, 4, 7, 11, 14, 17, 22, 28, 34, 41, 44, 68, 77, 82, 101, 119, 154, 164, 187, 202, 238, 287, 308, 374, 404, 451, 476, 574, 697, 707, 748, 902, 1111, 1148, 1309, 1394, 1414, 1717, 1804, 2222, 2618, 2788, 2828, 3157, 3434, 4141, 4444, 4879, 5236, 6314, 6868, 7667, 7777, 8282, 9758, 12019, 12628, 15334, 15554, 16564, 18887, 19516, 24038, 28987, 30668, 31108, 37774, 45551, 48076, 53669, 57974, 70397, 75548, 91102, 107338, 115948, 132209, 140794, 182204, 214676, 264418, 281588, 318857, 492779, 528836, 637714, 774367, 985558, 1275428, 1548734, 1971116, 3097468, 5420569, 10841138, 21682276]

約数ペア:

[(1, 21682276), (2, 10841138), (4, 5420569), (7, 3097468), (11, 1971116), (14, 1548734), (17, 1275428), (22, 985558), (28, 774367), (34, 637714), (41, 528836), (44, 492779), (68, 318857), (77, 281588), (82, 264418), (101, 214676), (119, 182204), (154, 140794), (164, 132209), (187, 115948), (202, 107338), (238, 91102), (287, 75548), (308, 70397), (374, 57974), (404, 53669), (451, 48076), (476, 45551), (574, 37774), (697, 31108), (707, 30668), (748, 28987), (902, 24038), (1111, 19516), (1148, 18887), (1309, 16564), (1394, 15554), (1414, 15334), (1717, 12628), (1804, 12019), (2222, 9758), (2618, 8282), (2788, 7777), (2828, 7667), (3157, 6868), (3434, 6314), (4141, 5236), (4444, 4879)]