20188454960

素因数分解:

$2^4\times 5^1\times {\mathrm{3221}}^1\times {\mathrm{78347}}^1$

素因数の和:81581

約数の個数: 40

約数和(自身を含む): 46953329616

約数和(自身を除く): 26764874656

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 3221, 6442, 12884, 16105, 25768, 32210, 51536, 64420, 78347, 128840, 156694, 257680, 313388, 391735, 626776, 783470, 1253552, 1566940, 3133880, 6267760, 252355687, 504711374, 1009422748, 1261778435, 2018845496, 2523556870, 4037690992, 5047113740, 10094227480, 20188454960]

約数ペア:

[(1, 20188454960), (2, 10094227480), (4, 5047113740), (5, 4037690992), (8, 2523556870), (10, 2018845496), (16, 1261778435), (20, 1009422748), (40, 504711374), (80, 252355687), (3221, 6267760), (6442, 3133880), (12884, 1566940), (16105, 1253552), (25768, 783470), (32210, 626776), (51536, 391735), (64420, 313388), (78347, 257680), (128840, 156694)]