21662900

素因数分解:

$2^2\times 5^2\times 7^2\times {\mathrm{4421}}^1$

素因数の和:4449

約数の個数: 54

約数和(自身を含む): 54695718

約数和(自身を除く): 33032818

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 49, 50, 70, 98, 100, 140, 175, 196, 245, 350, 490, 700, 980, 1225, 2450, 4421, 4900, 8842, 17684, 22105, 30947, 44210, 61894, 88420, 110525, 123788, 154735, 216629, 221050, 309470, 433258, 442100, 618940, 773675, 866516, 1083145, 1547350, 2166290, 3094700, 4332580, 5415725, 10831450, 21662900]

約数ペア:

[(1, 21662900), (2, 10831450), (4, 5415725), (5, 4332580), (7, 3094700), (10, 2166290), (14, 1547350), (20, 1083145), (25, 866516), (28, 773675), (35, 618940), (49, 442100), (50, 433258), (70, 309470), (98, 221050), (100, 216629), (140, 154735), (175, 123788), (196, 110525), (245, 88420), (350, 61894), (490, 44210), (700, 30947), (980, 22105), (1225, 17684), (2450, 8842), (4421, 4900)]