18787527

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{223}}^1$

素因数の和:300

約数の個数: 48

約数和(自身を含む): 31868928

約数和(自身を除く): 13081401

約数列:

[1, 3, 9, 11, 23, 33, 37, 69, 99, 111, 207, 223, 253, 333, 407, 669, 759, 851, 1221, 2007, 2277, 2453, 2553, 3663, 5129, 7359, 7659, 8251, 9361, 15387, 22077, 24753, 28083, 46161, 56419, 74259, 84249, 90761, 169257, 189773, 272283, 507771, 569319, 816849, 1707957, 2087503, 6262509, 18787527]

約数ペア:

[(1, 18787527), (3, 6262509), (9, 2087503), (11, 1707957), (23, 816849), (33, 569319), (37, 507771), (69, 272283), (99, 189773), (111, 169257), (207, 90761), (223, 84249), (253, 74259), (333, 56419), (407, 46161), (669, 28083), (759, 24753), (851, 22077), (1221, 15387), (2007, 9361), (2277, 8251), (2453, 7659), (2553, 7359), (3663, 5129)]