21376642

素因数分解:

$2^1\times 7^2\times {\mathrm{331}}^1\times {\mathrm{659}}^1$

素因数の和:1006

約数の個数: 24

約数和(自身を含む): 37469520

約数和(自身を除く): 16092878

約数列:

[1, 2, 7, 14, 49, 98, 331, 659, 662, 1318, 2317, 4613, 4634, 9226, 16219, 32291, 32438, 64582, 218129, 436258, 1526903, 3053806, 10688321, 21376642]

約数ペア:

[(1, 21376642), (2, 10688321), (7, 3053806), (14, 1526903), (49, 436258), (98, 218129), (331, 64582), (659, 32438), (662, 32291), (1318, 16219), (2317, 9226), (4613, 4634)]