21920514

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{2791}}^1$

素因数の和:2831

約数の個数: 64

約数和(自身を含む): 57894912

約数和(自身を除く): 35974398

約数列:

[1, 2, 3, 6, 7, 11, 14, 17, 21, 22, 33, 34, 42, 51, 66, 77, 102, 119, 154, 187, 231, 238, 357, 374, 462, 561, 714, 1122, 1309, 2618, 2791, 3927, 5582, 7854, 8373, 16746, 19537, 30701, 39074, 47447, 58611, 61402, 92103, 94894, 117222, 142341, 184206, 214907, 284682, 332129, 429814, 521917, 644721, 664258, 996387, 1043834, 1289442, 1565751, 1992774, 3131502, 3653419, 7306838, 10960257, 21920514]

約数ペア:

[(1, 21920514), (2, 10960257), (3, 7306838), (6, 3653419), (7, 3131502), (11, 1992774), (14, 1565751), (17, 1289442), (21, 1043834), (22, 996387), (33, 664258), (34, 644721), (42, 521917), (51, 429814), (66, 332129), (77, 284682), (102, 214907), (119, 184206), (154, 142341), (187, 117222), (231, 94894), (238, 92103), (357, 61402), (374, 58611), (462, 47447), (561, 39074), (714, 30701), (1122, 19537), (1309, 16746), (2618, 8373), (2791, 7854), (3927, 5582)]