19771785

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{677}}^1$

素因数の和:758

約数の個数: 48

約数和(自身を含む): 38076480

約数和(自身を除く): 18304695

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 59, 99, 165, 177, 295, 495, 531, 649, 677, 885, 1947, 2031, 2655, 3245, 3385, 5841, 6093, 7447, 9735, 10155, 22341, 29205, 30465, 37235, 39943, 67023, 111705, 119829, 199715, 335115, 359487, 439373, 599145, 1318119, 1797435, 2196865, 3954357, 6590595, 19771785]

約数ペア:

[(1, 19771785), (3, 6590595), (5, 3954357), (9, 2196865), (11, 1797435), (15, 1318119), (33, 599145), (45, 439373), (55, 359487), (59, 335115), (99, 199715), (165, 119829), (177, 111705), (295, 67023), (495, 39943), (531, 37235), (649, 30465), (677, 29205), (885, 22341), (1947, 10155), (2031, 9735), (2655, 7447), (3245, 6093), (3385, 5841)]