644770815

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{2903}}^1$

素因数の和:3008

約数の個数: 64

約数和(自身を含む): 1194310656

約数和(自身を除く): 549539841

約数列:

[1, 3, 5, 13, 15, 17, 39, 51, 65, 67, 85, 195, 201, 221, 255, 335, 663, 871, 1005, 1105, 1139, 2613, 2903, 3315, 3417, 4355, 5695, 8709, 13065, 14515, 14807, 17085, 37739, 43545, 44421, 49351, 74035, 113217, 148053, 188695, 194501, 222105, 246755, 566085, 583503, 641563, 740265, 972505, 1924689, 2528513, 2917515, 3207815, 3306517, 7585539, 9623445, 9919551, 12642565, 16532585, 37927695, 42984721, 49597755, 128954163, 214923605, 644770815]

約数ペア:

[(1, 644770815), (3, 214923605), (5, 128954163), (13, 49597755), (15, 42984721), (17, 37927695), (39, 16532585), (51, 12642565), (65, 9919551), (67, 9623445), (85, 7585539), (195, 3306517), (201, 3207815), (221, 2917515), (255, 2528513), (335, 1924689), (663, 972505), (871, 740265), (1005, 641563), (1105, 583503), (1139, 566085), (2613, 246755), (2903, 222105), (3315, 194501), (3417, 188695), (4355, 148053), (5695, 113217), (8709, 74035), (13065, 49351), (14515, 44421), (14807, 43545), (17085, 37739)]