20748855

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{1549}}^1$

素因数の和:1623

約数の個数: 32

約数和(自身を含む): 35712000

約数和(自身を除く): 14963145

約数列:

[1, 3, 5, 15, 19, 47, 57, 95, 141, 235, 285, 705, 893, 1549, 2679, 4465, 4647, 7745, 13395, 23235, 29431, 72803, 88293, 147155, 218409, 364015, 441465, 1092045, 1383257, 4149771, 6916285, 20748855]

約数ペア:

[(1, 20748855), (3, 6916285), (5, 4149771), (15, 1383257), (19, 1092045), (47, 441465), (57, 364015), (95, 218409), (141, 147155), (235, 88293), (285, 72803), (705, 29431), (893, 23235), (1549, 13395), (2679, 7745), (4465, 4647)]