20989164

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{249871}}^1$

素因数の和:249885

約数の個数: 24

約数和(自身を含む): 55971328

約数和(自身を除く): 34982164

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 249871, 499742, 749613, 999484, 1499226, 1749097, 2998452, 3498194, 5247291, 6996388, 10494582, 20989164]

約数ペア:

[(1, 20989164), (2, 10494582), (3, 6996388), (4, 5247291), (6, 3498194), (7, 2998452), (12, 1749097), (14, 1499226), (21, 999484), (28, 749613), (42, 499742), (84, 249871)]