21021770

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{1187}}^1$

素因数の和:1235

約数の個数: 64

約数和(自身を含む): 49268736

約数和(自身を除く): 28246966

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 23, 35, 46, 55, 70, 77, 110, 115, 154, 161, 230, 253, 322, 385, 506, 770, 805, 1187, 1265, 1610, 1771, 2374, 2530, 3542, 5935, 8309, 8855, 11870, 13057, 16618, 17710, 26114, 27301, 41545, 54602, 65285, 83090, 91399, 130570, 136505, 182798, 191107, 273010, 300311, 382214, 456995, 600622, 913990, 955535, 1501555, 1911070, 2102177, 3003110, 4204354, 10510885, 21021770]

約数ペア:

[(1, 21021770), (2, 10510885), (5, 4204354), (7, 3003110), (10, 2102177), (11, 1911070), (14, 1501555), (22, 955535), (23, 913990), (35, 600622), (46, 456995), (55, 382214), (70, 300311), (77, 273010), (110, 191107), (115, 182798), (154, 136505), (161, 130570), (230, 91399), (253, 83090), (322, 65285), (385, 54602), (506, 41545), (770, 27301), (805, 26114), (1187, 17710), (1265, 16618), (1610, 13057), (1771, 11870), (2374, 8855), (2530, 8309), (3542, 5935)]