18990720001

素因数分解:

${\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1\times {\mathrm{26891}}^1$

素因数の和:27061

約数の個数: 32

約数和(自身を含む): 22718361600

約数和(自身を除く): 3727641599

約数列:

[1, 11, 19, 31, 109, 209, 341, 589, 1199, 2071, 3379, 6479, 22781, 26891, 37169, 64201, 295801, 510929, 706211, 833621, 2931119, 5620219, 9169831, 15838799, 32242309, 55691261, 90864689, 174226789, 612603871, 999511579, 1726429091, 18990720001]

約数ペア:

[(1, 18990720001), (11, 1726429091), (19, 999511579), (31, 612603871), (109, 174226789), (209, 90864689), (341, 55691261), (589, 32242309), (1199, 15838799), (2071, 9169831), (3379, 5620219), (6479, 2931119), (22781, 833621), (26891, 706211), (37169, 510929), (64201, 295801)]