19881738

素因数分解:

$2^1\times 3^2\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{1511}}^1$

素因数の和:1579

約数の個数: 48

約数和(自身を含む): 46702656

約数和(自身を除く): 26820918

約数列:

[1, 2, 3, 6, 9, 17, 18, 34, 43, 51, 86, 102, 129, 153, 258, 306, 387, 731, 774, 1462, 1511, 2193, 3022, 4386, 4533, 6579, 9066, 13158, 13599, 25687, 27198, 51374, 64973, 77061, 129946, 154122, 194919, 231183, 389838, 462366, 584757, 1104541, 1169514, 2209082, 3313623, 6627246, 9940869, 19881738]

約数ペア:

[(1, 19881738), (2, 9940869), (3, 6627246), (6, 3313623), (9, 2209082), (17, 1169514), (18, 1104541), (34, 584757), (43, 462366), (51, 389838), (86, 231183), (102, 194919), (129, 154122), (153, 129946), (258, 77061), (306, 64973), (387, 51374), (731, 27198), (774, 25687), (1462, 13599), (1511, 13158), (2193, 9066), (3022, 6579), (4386, 4533)]