20204288

素因数分解:

$2^8\times {\mathrm{13}}^2\times {\mathrm{467}}^1$

素因数の和:509

約数の個数: 54

約数和(自身を含む): 43764084

約数和(自身を除く): 23559796

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 104, 128, 169, 208, 256, 338, 416, 467, 676, 832, 934, 1352, 1664, 1868, 2704, 3328, 3736, 5408, 6071, 7472, 10816, 12142, 14944, 21632, 24284, 29888, 43264, 48568, 59776, 78923, 97136, 119552, 157846, 194272, 315692, 388544, 631384, 777088, 1262768, 1554176, 2525536, 5051072, 10102144, 20204288]

約数ペア:

[(1, 20204288), (2, 10102144), (4, 5051072), (8, 2525536), (13, 1554176), (16, 1262768), (26, 777088), (32, 631384), (52, 388544), (64, 315692), (104, 194272), (128, 157846), (169, 119552), (208, 97136), (256, 78923), (338, 59776), (416, 48568), (467, 43264), (676, 29888), (832, 24284), (934, 21632), (1352, 14944), (1664, 12142), (1868, 10816), (2704, 7472), (3328, 6071), (3736, 5408)]