21221000

素因数分解:

$2^3\times 5^3\times {\mathrm{21221}}^1$

素因数の和:21242

約数の個数: 32

約数和(自身を含む): 49659480

約数和(自身を除く): 28438480

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 1000, 21221, 42442, 84884, 106105, 169768, 212210, 424420, 530525, 848840, 1061050, 2122100, 2652625, 4244200, 5305250, 10610500, 21221000]

約数ペア:

[(1, 21221000), (2, 10610500), (4, 5305250), (5, 4244200), (8, 2652625), (10, 2122100), (20, 1061050), (25, 848840), (40, 530525), (50, 424420), (100, 212210), (125, 169768), (200, 106105), (250, 84884), (500, 42442), (1000, 21221)]