400259470

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{3078919}}^1$

素因数の和:3078939

約数の個数: 16

約数和(自身を含む): 775887840

約数和(自身を除く): 375628370

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 3078919, 6157838, 15394595, 30789190, 40025947, 80051894, 200129735, 400259470]

約数ペア:

[(1, 400259470), (2, 200129735), (5, 80051894), (10, 40025947), (13, 30789190), (26, 15394595), (65, 6157838), (130, 3078919)]