129601600

素因数分解:

$2^6\times 5^2\times {\mathrm{81001}}^1$

素因数の和:81023

約数の個数: 42

約数和(自身を含む): 318904874

約数和(自身を除く): 189303274

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 160, 200, 320, 400, 800, 1600, 81001, 162002, 324004, 405005, 648008, 810010, 1296016, 1620020, 2025025, 2592032, 3240040, 4050050, 5184064, 6480080, 8100100, 12960160, 16200200, 25920320, 32400400, 64800800, 129601600]

約数ペア:

[(1, 129601600), (2, 64800800), (4, 32400400), (5, 25920320), (8, 16200200), (10, 12960160), (16, 8100100), (20, 6480080), (25, 5184064), (32, 4050050), (40, 3240040), (50, 2592032), (64, 2025025), (80, 1620020), (100, 1296016), (160, 810010), (200, 648008), (320, 405005), (400, 324004), (800, 162002), (1600, 81001)]