21242930

素因数分解:

$2^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{149}}^1\times {\mathrm{269}}^1$

素因数の和:478

約数の個数: 32

約数和(自身を含む): 39366000

約数和(自身を除く): 18123070

約数列:

[1, 2, 5, 10, 53, 106, 149, 265, 269, 298, 530, 538, 745, 1345, 1490, 2690, 7897, 14257, 15794, 28514, 39485, 40081, 71285, 78970, 80162, 142570, 200405, 400810, 2124293, 4248586, 10621465, 21242930]

約数ペア:

[(1, 21242930), (2, 10621465), (5, 4248586), (10, 2124293), (53, 400810), (106, 200405), (149, 142570), (265, 80162), (269, 78970), (298, 71285), (530, 40081), (538, 39485), (745, 28514), (1345, 15794), (1490, 14257), (2690, 7897)]