20541470

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{1481}}^1$

素因数の和:1580

約数の個数: 32

約数和(自身を含む): 39480480

約数和(自身を除く): 18939010

約数列:

[1, 2, 5, 10, 19, 38, 73, 95, 146, 190, 365, 730, 1387, 1481, 2774, 2962, 6935, 7405, 13870, 14810, 28139, 56278, 108113, 140695, 216226, 281390, 540565, 1081130, 2054147, 4108294, 10270735, 20541470]

約数ペア:

[(1, 20541470), (2, 10270735), (5, 4108294), (10, 2054147), (19, 1081130), (38, 540565), (73, 281390), (95, 216226), (146, 140695), (190, 108113), (365, 56278), (730, 28139), (1387, 14810), (1481, 13870), (2774, 7405), (2962, 6935)]