1381808

素因数分解:

$2^4\times {\mathrm{67}}^1\times {\mathrm{1289}}^1$

素因数の和:1364

約数の個数: 20

約数和(自身を含む): 2719320

約数和(自身を除く): 1337512

約数列:

[1, 2, 4, 8, 16, 67, 134, 268, 536, 1072, 1289, 2578, 5156, 10312, 20624, 86363, 172726, 345452, 690904, 1381808]

約数ペア:

[(1, 1381808), (2, 690904), (4, 345452), (8, 172726), (16, 86363), (67, 20624), (134, 10312), (268, 5156), (536, 2578), (1072, 1289)]