20903768

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{101}}^1\times {\mathrm{631}}^1$

素因数の和:779

約数の個数: 32

約数和(自身を含む): 40612320

約数和(自身を除く): 19708552

約数列:

[1, 2, 4, 8, 41, 82, 101, 164, 202, 328, 404, 631, 808, 1262, 2524, 4141, 5048, 8282, 16564, 25871, 33128, 51742, 63731, 103484, 127462, 206968, 254924, 509848, 2612971, 5225942, 10451884, 20903768]

約数ペア:

[(1, 20903768), (2, 10451884), (4, 5225942), (8, 2612971), (41, 509848), (82, 254924), (101, 206968), (164, 127462), (202, 103484), (328, 63731), (404, 51742), (631, 33128), (808, 25871), (1262, 16564), (2524, 8282), (4141, 5048)]