278049387

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{557}}^1\times {\mathrm{2161}}^1$

素因数の和:2739

約数の個数: 32

約数和(自身を含む): 463256064

約数和(自身を除く): 185206677

約数列:

[1, 3, 7, 11, 21, 33, 77, 231, 557, 1671, 2161, 3899, 6127, 6483, 11697, 15127, 18381, 23771, 42889, 45381, 71313, 128667, 166397, 499191, 1203677, 3611031, 8425739, 13240447, 25277217, 39721341, 92683129, 278049387]

約数ペア:

[(1, 278049387), (3, 92683129), (7, 39721341), (11, 25277217), (21, 13240447), (33, 8425739), (77, 3611031), (231, 1203677), (557, 499191), (1671, 166397), (2161, 128667), (3899, 71313), (6127, 45381), (6483, 42889), (11697, 23771), (15127, 18381)]