18930219

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{509}}^1$

素因数の和:560

約数の個数: 48

約数和(自身を含む): 33488640

約数和(自身を除く): 14558421

約数列:

[1, 3, 7, 11, 21, 23, 33, 49, 69, 77, 147, 161, 231, 253, 483, 509, 539, 759, 1127, 1527, 1617, 1771, 3381, 3563, 5313, 5599, 10689, 11707, 12397, 16797, 24941, 35121, 37191, 39193, 74823, 81949, 117579, 128777, 245847, 274351, 386331, 573643, 823053, 901439, 1720929, 2704317, 6310073, 18930219]

約数ペア:

[(1, 18930219), (3, 6310073), (7, 2704317), (11, 1720929), (21, 901439), (23, 823053), (33, 573643), (49, 386331), (69, 274351), (77, 245847), (147, 128777), (161, 117579), (231, 81949), (253, 74823), (483, 39193), (509, 37191), (539, 35121), (759, 24941), (1127, 16797), (1527, 12397), (1617, 11707), (1771, 10689), (3381, 5599), (3563, 5313)]