21195746

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{2003}}^1$

素因数の和:2066

約数の個数: 32

約数和(自身を含む): 38380608

約数和(自身を除く): 17184862

約数列:

[1, 2, 11, 13, 22, 26, 37, 74, 143, 286, 407, 481, 814, 962, 2003, 4006, 5291, 10582, 22033, 26039, 44066, 52078, 74111, 148222, 286429, 572858, 815221, 963443, 1630442, 1926886, 10597873, 21195746]

約数ペア:

[(1, 21195746), (2, 10597873), (11, 1926886), (13, 1630442), (22, 963443), (26, 815221), (37, 572858), (74, 286429), (143, 148222), (286, 74111), (407, 52078), (481, 44066), (814, 26039), (962, 22033), (2003, 10582), (4006, 5291)]