21908810

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{769}}^1$

素因数の和:831

約数の個数: 64

約数和(自身を含む): 50561280

約数和(自身を除く): 28652470

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 37, 55, 70, 74, 77, 110, 154, 185, 259, 370, 385, 407, 518, 769, 770, 814, 1295, 1538, 2035, 2590, 2849, 3845, 4070, 5383, 5698, 7690, 8459, 10766, 14245, 16918, 26915, 28453, 28490, 42295, 53830, 56906, 59213, 84590, 118426, 142265, 199171, 284530, 296065, 312983, 398342, 592130, 625966, 995855, 1564915, 1991710, 2190881, 3129830, 4381762, 10954405, 21908810]

約数ペア:

[(1, 21908810), (2, 10954405), (5, 4381762), (7, 3129830), (10, 2190881), (11, 1991710), (14, 1564915), (22, 995855), (35, 625966), (37, 592130), (55, 398342), (70, 312983), (74, 296065), (77, 284530), (110, 199171), (154, 142265), (185, 118426), (259, 84590), (370, 59213), (385, 56906), (407, 53830), (518, 42295), (769, 28490), (770, 28453), (814, 26915), (1295, 16918), (1538, 14245), (2035, 10766), (2590, 8459), (2849, 7690), (3845, 5698), (4070, 5383)]