19919420

素因数分解:

$2^2\times 5^1\times {\mathrm{619}}^1\times {\mathrm{1609}}^1$

素因数の和:2237

約数の個数: 24

約数和(自身を含む): 41924400

約数和(自身を除く): 22004980

約数列:

[1, 2, 4, 5, 10, 20, 619, 1238, 1609, 2476, 3095, 3218, 6190, 6436, 8045, 12380, 16090, 32180, 995971, 1991942, 3983884, 4979855, 9959710, 19919420]

約数ペア:

[(1, 19919420), (2, 9959710), (4, 4979855), (5, 3983884), (10, 1991942), (20, 995971), (619, 32180), (1238, 16090), (1609, 12380), (2476, 8045), (3095, 6436), (3218, 6190)]