397736140

素因数分解:

$2^2\times 5^1\times {\mathrm{409}}^1\times {\mathrm{48623}}^1$

素因数の和:49041

約数の個数: 24

約数和(自身を含む): 837305280

約数和(自身を除く): 439569140

約数列:

[1, 2, 4, 5, 10, 20, 409, 818, 1636, 2045, 4090, 8180, 48623, 97246, 194492, 243115, 486230, 972460, 19886807, 39773614, 79547228, 99434035, 198868070, 397736140]

約数ペア:

[(1, 397736140), (2, 198868070), (4, 99434035), (5, 79547228), (10, 39773614), (20, 19886807), (409, 972460), (818, 486230), (1636, 243115), (2045, 194492), (4090, 97246), (8180, 48623)]