21375428690

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{1997}}^1\times {\mathrm{13901}}^1$

素因数の和:15923

約数の個数: 64

約数和(自身を含む): 47997266688

約数和(自身を除く): 26621837998

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 55, 70, 77, 110, 154, 385, 770, 1997, 3994, 9985, 13901, 13979, 19970, 21967, 27802, 27958, 43934, 69505, 69895, 97307, 109835, 139010, 139790, 152911, 153769, 194614, 219670, 305822, 307538, 486535, 764555, 768845, 973070, 1070377, 1529110, 1537690, 2140754, 5351885, 10703770, 27760297, 55520594, 138801485, 194322079, 277602970, 305363267, 388644158, 610726534, 971610395, 1526816335, 1943220790, 2137542869, 3053632670, 4275085738, 10687714345, 21375428690]

約数ペア:

[(1, 21375428690), (2, 10687714345), (5, 4275085738), (7, 3053632670), (10, 2137542869), (11, 1943220790), (14, 1526816335), (22, 971610395), (35, 610726534), (55, 388644158), (70, 305363267), (77, 277602970), (110, 194322079), (154, 138801485), (385, 55520594), (770, 27760297), (1997, 10703770), (3994, 5351885), (9985, 2140754), (13901, 1537690), (13979, 1529110), (19970, 1070377), (21967, 973070), (27802, 768845), (27958, 764555), (43934, 486535), (69505, 307538), (69895, 305822), (97307, 219670), (109835, 194614), (139010, 153769), (139790, 152911)]