20421148

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{1187}}^1$

素因数の和:1242

約数の個数: 48

約数和(自身を含む): 43110144

約数和(自身を除く): 22688996

約数列:

[1, 2, 4, 11, 17, 22, 23, 34, 44, 46, 68, 92, 187, 253, 374, 391, 506, 748, 782, 1012, 1187, 1564, 2374, 4301, 4748, 8602, 13057, 17204, 20179, 26114, 27301, 40358, 52228, 54602, 80716, 109204, 221969, 300311, 443938, 464117, 600622, 887876, 928234, 1201244, 1856468, 5105287, 10210574, 20421148]

約数ペア:

[(1, 20421148), (2, 10210574), (4, 5105287), (11, 1856468), (17, 1201244), (22, 928234), (23, 887876), (34, 600622), (44, 464117), (46, 443938), (68, 300311), (92, 221969), (187, 109204), (253, 80716), (374, 54602), (391, 52228), (506, 40358), (748, 27301), (782, 26114), (1012, 20179), (1187, 17204), (1564, 13057), (2374, 8602), (4301, 4748)]