211892009

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{137}}^1\times {\mathrm{401}}^1$

素因数の和:593

約数の個数: 32

約数和(自身を含む): 266284800

約数和(自身を除く): 54392791

約数列:

[1, 7, 19, 29, 133, 137, 203, 401, 551, 959, 2603, 2807, 3857, 3973, 7619, 11629, 18221, 27811, 53333, 54937, 75487, 81403, 220951, 384559, 528409, 1043803, 1546657, 1593173, 7306621, 11152211, 30270287, 211892009]

約数ペア:

[(1, 211892009), (7, 30270287), (19, 11152211), (29, 7306621), (133, 1593173), (137, 1546657), (203, 1043803), (401, 528409), (551, 384559), (959, 220951), (2603, 81403), (2807, 75487), (3857, 54937), (3973, 53333), (7619, 27811), (11629, 18221)]