21301304

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{101}}^1\times {\mathrm{643}}^1$

素因数の和:791

約数の個数: 32

約数和(自身を含む): 41383440

約数和(自身を除く): 20082136

約数列:

[1, 2, 4, 8, 41, 82, 101, 164, 202, 328, 404, 643, 808, 1286, 2572, 4141, 5144, 8282, 16564, 26363, 33128, 52726, 64943, 105452, 129886, 210904, 259772, 519544, 2662663, 5325326, 10650652, 21301304]

約数ペア:

[(1, 21301304), (2, 10650652), (4, 5325326), (8, 2662663), (41, 519544), (82, 259772), (101, 210904), (164, 129886), (202, 105452), (328, 64943), (404, 52726), (643, 33128), (808, 26363), (1286, 16564), (2572, 8282), (4141, 5144)]