19996626

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{131}}^1$

素因数の和:271

約数の個数: 64

約数和(自身を含む): 46126080

約数和(自身を除く): 26129454

約数列:

[1, 2, 3, 6, 13, 19, 26, 38, 39, 57, 78, 103, 114, 131, 206, 247, 262, 309, 393, 494, 618, 741, 786, 1339, 1482, 1703, 1957, 2489, 2678, 3406, 3914, 4017, 4978, 5109, 5871, 7467, 8034, 10218, 11742, 13493, 14934, 25441, 26986, 32357, 40479, 50882, 64714, 76323, 80958, 97071, 152646, 175409, 194142, 256367, 350818, 512734, 526227, 769101, 1052454, 1538202, 3332771, 6665542, 9998313, 19996626]

約数ペア:

[(1, 19996626), (2, 9998313), (3, 6665542), (6, 3332771), (13, 1538202), (19, 1052454), (26, 769101), (38, 526227), (39, 512734), (57, 350818), (78, 256367), (103, 194142), (114, 175409), (131, 152646), (206, 97071), (247, 80958), (262, 76323), (309, 64714), (393, 50882), (494, 40479), (618, 32357), (741, 26986), (786, 25441), (1339, 14934), (1482, 13493), (1703, 11742), (1957, 10218), (2489, 8034), (2678, 7467), (3406, 5871), (3914, 5109), (4017, 4978)]