20021000

素因数分解:

$2^3\times 5^3\times {\mathrm{20021}}^1$

素因数の和:20042

約数の個数: 32

約数和(自身を含む): 46851480

約数和(自身を除く): 26830480

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 1000, 20021, 40042, 80084, 100105, 160168, 200210, 400420, 500525, 800840, 1001050, 2002100, 2502625, 4004200, 5005250, 10010500, 20021000]

約数ペア:

[(1, 20021000), (2, 10010500), (4, 5005250), (5, 4004200), (8, 2502625), (10, 2002100), (20, 1001050), (25, 800840), (40, 500525), (50, 400420), (100, 200210), (125, 160168), (200, 100105), (250, 80084), (500, 40042), (1000, 20021)]