21987755909

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{401}}^1\times {\mathrm{412273}}^1$

素因数の和:412700

約数の個数: 16

約数和(自身を含む): 26517463680

約数和(自身を除く): 4529707771

約数列:

[1, 7, 19, 133, 401, 2807, 7619, 53333, 412273, 2885911, 7833187, 54832309, 165321473, 1157250311, 3141107987, 21987755909]

約数ペア:

[(1, 21987755909), (7, 3141107987), (19, 1157250311), (133, 165321473), (401, 54832309), (2807, 7833187), (7619, 2885911), (53333, 412273)]