21040492

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{1223}}^1$

素因数の和:1278

約数の個数: 48

約数和(自身を含む): 44416512

約数和(自身を除く): 23376020

約数列:

[1, 2, 4, 11, 17, 22, 23, 34, 44, 46, 68, 92, 187, 253, 374, 391, 506, 748, 782, 1012, 1223, 1564, 2446, 4301, 4892, 8602, 13453, 17204, 20791, 26906, 28129, 41582, 53812, 56258, 83164, 112516, 228701, 309419, 457402, 478193, 618838, 914804, 956386, 1237676, 1912772, 5260123, 10520246, 21040492]

約数ペア:

[(1, 21040492), (2, 10520246), (4, 5260123), (11, 1912772), (17, 1237676), (22, 956386), (23, 914804), (34, 618838), (44, 478193), (46, 457402), (68, 309419), (92, 228701), (187, 112516), (253, 83164), (374, 56258), (391, 53812), (506, 41582), (748, 28129), (782, 26906), (1012, 20791), (1223, 17204), (1564, 13453), (2446, 8602), (4301, 4892)]