20105972588

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{61}}^1\times {\mathrm{137}}^1\times {\mathrm{3559}}^1$

素因数の和:3787

約数の個数: 72

約数和(自身を含む): 39018440160

約数和(自身を除く): 18912467572

約数列:

[1, 2, 4, 13, 26, 52, 61, 122, 137, 169, 244, 274, 338, 548, 676, 793, 1586, 1781, 3172, 3559, 3562, 7118, 7124, 8357, 10309, 14236, 16714, 20618, 23153, 33428, 41236, 46267, 46306, 92534, 92612, 108641, 185068, 217099, 217282, 434198, 434564, 487583, 601471, 868396, 975166, 1202942, 1412333, 1950332, 2405884, 2822287, 2824666, 5644574, 5649332, 6338579, 11289148, 12677158, 25354316, 29742563, 36689731, 59485126, 73379462, 82401527, 118970252, 146758924, 164803054, 329606108, 386653319, 773306638, 1546613276, 5026493147, 10052986294, 20105972588]

約数ペア:

[(1, 20105972588), (2, 10052986294), (4, 5026493147), (13, 1546613276), (26, 773306638), (52, 386653319), (61, 329606108), (122, 164803054), (137, 146758924), (169, 118970252), (244, 82401527), (274, 73379462), (338, 59485126), (548, 36689731), (676, 29742563), (793, 25354316), (1586, 12677158), (1781, 11289148), (3172, 6338579), (3559, 5649332), (3562, 5644574), (7118, 2824666), (7124, 2822287), (8357, 2405884), (10309, 1950332), (14236, 1412333), (16714, 1202942), (20618, 975166), (23153, 868396), (33428, 601471), (41236, 487583), (46267, 434564), (46306, 434198), (92534, 217282), (92612, 217099), (108641, 185068)]