281625981

素因数分解:

$3^1\times 7^3\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{569}}^1$

素因数の和:643

約数の個数: 64

約数和(自身を含む): 485184000

約数和(自身を除く): 203558019

約数列:

[1, 3, 7, 13, 21, 37, 39, 49, 91, 111, 147, 259, 273, 343, 481, 569, 637, 777, 1029, 1443, 1707, 1813, 1911, 3367, 3983, 4459, 5439, 7397, 10101, 11949, 12691, 13377, 21053, 22191, 23569, 27881, 38073, 51779, 63159, 70707, 83643, 147371, 155337, 164983, 195167, 273689, 362453, 442113, 494949, 585501, 821067, 1031597, 1087359, 1915823, 2537171, 3094791, 5747469, 7221179, 7611513, 13410761, 21663537, 40232283, 93875327, 281625981]

約数ペア:

[(1, 281625981), (3, 93875327), (7, 40232283), (13, 21663537), (21, 13410761), (37, 7611513), (39, 7221179), (49, 5747469), (91, 3094791), (111, 2537171), (147, 1915823), (259, 1087359), (273, 1031597), (343, 821067), (481, 585501), (569, 494949), (637, 442113), (777, 362453), (1029, 273689), (1443, 195167), (1707, 164983), (1813, 155337), (1911, 147371), (3367, 83643), (3983, 70707), (4459, 63159), (5439, 51779), (7397, 38073), (10101, 27881), (11949, 23569), (12691, 22191), (13377, 21053)]