20057565

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{43}}^1\times {\mathrm{257}}^1$

素因数の和:330

約数の個数: 48

約数和(自身を含む): 36235584

約数和(自身を除く): 16178019

約数列:

[1, 3, 5, 11, 15, 33, 43, 55, 121, 129, 165, 215, 257, 363, 473, 605, 645, 771, 1285, 1419, 1815, 2365, 2827, 3855, 5203, 7095, 8481, 11051, 14135, 15609, 26015, 31097, 33153, 42405, 55255, 78045, 93291, 121561, 155485, 165765, 364683, 466455, 607805, 1337171, 1823415, 4011513, 6685855, 20057565]

約数ペア:

[(1, 20057565), (3, 6685855), (5, 4011513), (11, 1823415), (15, 1337171), (33, 607805), (43, 466455), (55, 364683), (121, 165765), (129, 155485), (165, 121561), (215, 93291), (257, 78045), (363, 55255), (473, 42405), (605, 33153), (645, 31097), (771, 26015), (1285, 15609), (1419, 14135), (1815, 11051), (2365, 8481), (2827, 7095), (3855, 5203)]