20758816

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{359}}^1$

素因数の和:521

約数の個数: 48

約数和(自身を含む): 44452800

約数和(自身を除く): 23693984

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 104, 139, 208, 278, 359, 416, 556, 718, 1112, 1436, 1807, 2224, 2872, 3614, 4448, 4667, 5744, 7228, 9334, 11488, 14456, 18668, 28912, 37336, 49901, 57824, 74672, 99802, 149344, 199604, 399208, 648713, 798416, 1297426, 1596832, 2594852, 5189704, 10379408, 20758816]

約数ペア:

[(1, 20758816), (2, 10379408), (4, 5189704), (8, 2594852), (13, 1596832), (16, 1297426), (26, 798416), (32, 648713), (52, 399208), (104, 199604), (139, 149344), (208, 99802), (278, 74672), (359, 57824), (416, 49901), (556, 37336), (718, 28912), (1112, 18668), (1436, 14456), (1807, 11488), (2224, 9334), (2872, 7228), (3614, 5744), (4448, 4667)]