19991420

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{52609}}^1$

素因数の和:52637

約数の個数: 24

約数和(自身を含む): 44192400

約数和(自身を除く): 24200980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 52609, 105218, 210436, 263045, 526090, 999571, 1052180, 1999142, 3998284, 4997855, 9995710, 19991420]

約数ペア:

[(1, 19991420), (2, 9995710), (4, 4997855), (5, 3998284), (10, 1999142), (19, 1052180), (20, 999571), (38, 526090), (76, 263045), (95, 210436), (190, 105218), (380, 52609)]