216960400

素因数分解:

$2^4\times 5^2\times {\mathrm{542401}}^1$

素因数の和:542419

約数の個数: 30

約数和(自身を含む): 521248322

約数和(自身を除く): 304287922

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 542401, 1084802, 2169604, 2712005, 4339208, 5424010, 8678416, 10848020, 13560025, 21696040, 27120050, 43392080, 54240100, 108480200, 216960400]

約数ペア:

[(1, 216960400), (2, 108480200), (4, 54240100), (5, 43392080), (8, 27120050), (10, 21696040), (16, 13560025), (20, 10848020), (25, 8678416), (40, 5424010), (50, 4339208), (80, 2712005), (100, 2169604), (200, 1084802), (400, 542401)]