21000435484

素因数分解:

$2^2\times 7^2\times {\mathrm{191}}^1\times {\mathrm{560969}}^1$

素因数の和:561178

約数の個数: 36

約数和(自身を含む): 42974789760

約数和(自身を除く): 21974354276

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 191, 196, 382, 764, 1337, 2674, 5348, 9359, 18718, 37436, 560969, 1121938, 2243876, 3926783, 7853566, 15707132, 27487481, 54974962, 107145079, 109949924, 214290158, 428580316, 750015553, 1500031106, 3000062212, 5250108871, 10500217742, 21000435484]

約数ペア:

[(1, 21000435484), (2, 10500217742), (4, 5250108871), (7, 3000062212), (14, 1500031106), (28, 750015553), (49, 428580316), (98, 214290158), (191, 109949924), (196, 107145079), (382, 54974962), (764, 27487481), (1337, 15707132), (2674, 7853566), (5348, 3926783), (9359, 2243876), (18718, 1121938), (37436, 560969)]