21170655

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{2251}}^1$

素因数の和:2292

約数の個数: 48

約数和(自身を含む): 42157440

約数和(自身を除く): 20986785

約数列:

[1, 3, 5, 9, 11, 15, 19, 33, 45, 55, 57, 95, 99, 165, 171, 209, 285, 495, 627, 855, 1045, 1881, 2251, 3135, 6753, 9405, 11255, 20259, 24761, 33765, 42769, 74283, 101295, 123805, 128307, 213845, 222849, 371415, 384921, 470459, 641535, 1114245, 1411377, 1924605, 2352295, 4234131, 7056885, 21170655]

約数ペア:

[(1, 21170655), (3, 7056885), (5, 4234131), (9, 2352295), (11, 1924605), (15, 1411377), (19, 1114245), (33, 641535), (45, 470459), (55, 384921), (57, 371415), (95, 222849), (99, 213845), (165, 128307), (171, 123805), (209, 101295), (285, 74283), (495, 42769), (627, 33765), (855, 24761), (1045, 20259), (1881, 11255), (2251, 9405), (3135, 6753)]