771561

素因数分解:

$3^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{331}}^1$

素因数の和:381

約数の個数: 24

約数和(自身を含む): 1312064

約数和(自身を除く): 540503

約数列:

[1, 3, 7, 9, 21, 37, 63, 111, 259, 331, 333, 777, 993, 2317, 2331, 2979, 6951, 12247, 20853, 36741, 85729, 110223, 257187, 771561]

約数ペア:

[(1, 771561), (3, 257187), (7, 110223), (9, 85729), (21, 36741), (37, 20853), (63, 12247), (111, 6951), (259, 2979), (331, 2331), (333, 2317), (777, 993)]