21810256

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{97}}^1$

素因数の和:188

約数の個数: 80

約数和(自身を含む): 48996864

約数和(自身を除く): 27186608

約数列:

[1, 2, 4, 8, 13, 16, 23, 26, 46, 47, 52, 92, 94, 97, 104, 184, 188, 194, 208, 299, 368, 376, 388, 598, 611, 752, 776, 1081, 1196, 1222, 1261, 1552, 2162, 2231, 2392, 2444, 2522, 4324, 4462, 4559, 4784, 4888, 5044, 8648, 8924, 9118, 9776, 10088, 14053, 17296, 17848, 18236, 20176, 28106, 29003, 35696, 36472, 56212, 58006, 59267, 72944, 104857, 112424, 116012, 118534, 209714, 224848, 232024, 237068, 419428, 464048, 474136, 838856, 948272, 1363141, 1677712, 2726282, 5452564, 10905128, 21810256]

約数ペア:

[(1, 21810256), (2, 10905128), (4, 5452564), (8, 2726282), (13, 1677712), (16, 1363141), (23, 948272), (26, 838856), (46, 474136), (47, 464048), (52, 419428), (92, 237068), (94, 232024), (97, 224848), (104, 209714), (184, 118534), (188, 116012), (194, 112424), (208, 104857), (299, 72944), (368, 59267), (376, 58006), (388, 56212), (598, 36472), (611, 35696), (752, 29003), (776, 28106), (1081, 20176), (1196, 18236), (1222, 17848), (1261, 17296), (1552, 14053), (2162, 10088), (2231, 9776), (2392, 9118), (2444, 8924), (2522, 8648), (4324, 5044), (4462, 4888), (4559, 4784)]