20139548

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{257}}^1$

素因数の和:422

約数の個数: 48

約数和(自身を含む): 41870304

約数和(自身を除く): 21730756

約数列:

[1, 2, 4, 11, 13, 22, 26, 44, 52, 137, 143, 257, 274, 286, 514, 548, 572, 1028, 1507, 1781, 2827, 3014, 3341, 3562, 5654, 6028, 6682, 7124, 11308, 13364, 19591, 35209, 36751, 39182, 70418, 73502, 78364, 140836, 147004, 387299, 457717, 774598, 915434, 1549196, 1830868, 5034887, 10069774, 20139548]

約数ペア:

[(1, 20139548), (2, 10069774), (4, 5034887), (11, 1830868), (13, 1549196), (22, 915434), (26, 774598), (44, 457717), (52, 387299), (137, 147004), (143, 140836), (257, 78364), (274, 73502), (286, 70418), (514, 39182), (548, 36751), (572, 35209), (1028, 19591), (1507, 13364), (1781, 11308), (2827, 7124), (3014, 6682), (3341, 6028), (3562, 5654)]