20686784

素因数分解:

$2^6\times {\mathrm{43}}^1\times {\mathrm{7517}}^1$

素因数の和:7572

約数の個数: 28

約数和(自身を含む): 42010584

約数和(自身を除く): 21323800

約数列:

[1, 2, 4, 8, 16, 32, 43, 64, 86, 172, 344, 688, 1376, 2752, 7517, 15034, 30068, 60136, 120272, 240544, 323231, 481088, 646462, 1292924, 2585848, 5171696, 10343392, 20686784]

約数ペア:

[(1, 20686784), (2, 10343392), (4, 5171696), (8, 2585848), (16, 1292924), (32, 646462), (43, 481088), (64, 323231), (86, 240544), (172, 120272), (344, 60136), (688, 30068), (1376, 15034), (2752, 7517)]