388304217

素因数分解:

$3^2\times 7^1\times {\mathrm{457}}^1\times {\mathrm{13487}}^1$

素因数の和:13957

約数の個数: 24

約数和(自身を含む): 642460416

約数和(自身を除く): 254156199

約数列:

[1, 3, 7, 9, 21, 63, 457, 1371, 3199, 4113, 9597, 13487, 28791, 40461, 94409, 121383, 283227, 849681, 6163559, 18490677, 43144913, 55472031, 129434739, 388304217]

約数ペア:

[(1, 388304217), (3, 129434739), (7, 55472031), (9, 43144913), (21, 18490677), (63, 6163559), (457, 849681), (1371, 283227), (3199, 121383), (4113, 94409), (9597, 40461), (13487, 28791)]