21017876

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{811}}^1$

素因数の和:876

約数の個数: 48

約数和(自身を含む): 43653120

約数和(自身を除く): 22635244

約数列:

[1, 2, 4, 11, 19, 22, 31, 38, 44, 62, 76, 124, 209, 341, 418, 589, 682, 811, 836, 1178, 1364, 1622, 2356, 3244, 6479, 8921, 12958, 15409, 17842, 25141, 25916, 30818, 35684, 50282, 61636, 100564, 169499, 276551, 338998, 477679, 553102, 677996, 955358, 1106204, 1910716, 5254469, 10508938, 21017876]

約数ペア:

[(1, 21017876), (2, 10508938), (4, 5254469), (11, 1910716), (19, 1106204), (22, 955358), (31, 677996), (38, 553102), (44, 477679), (62, 338998), (76, 276551), (124, 169499), (209, 100564), (341, 61636), (418, 50282), (589, 35684), (682, 30818), (811, 25916), (836, 25141), (1178, 17842), (1364, 15409), (1622, 12958), (2356, 8921), (3244, 6479)]