20857564210

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{1283}}^1\times {\mathrm{3271}}^1$

素因数の和:4639

約数の個数: 64

約数和(自身を含む): 43558539264

約数和(自身を除く): 22700975054

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 71, 142, 355, 497, 710, 994, 1283, 2485, 2566, 3271, 4970, 6415, 6542, 8981, 12830, 16355, 17962, 22897, 32710, 44905, 45794, 89810, 91093, 114485, 182186, 228970, 232241, 455465, 464482, 637651, 910930, 1161205, 1275302, 1625687, 2322410, 3188255, 3251374, 4196693, 6376510, 8128435, 8393386, 16256870, 20983465, 29376851, 41966930, 58753702, 146884255, 293768510, 297965203, 595930406, 1489826015, 2085756421, 2979652030, 4171512842, 10428782105, 20857564210]

約数ペア:

[(1, 20857564210), (2, 10428782105), (5, 4171512842), (7, 2979652030), (10, 2085756421), (14, 1489826015), (35, 595930406), (70, 297965203), (71, 293768510), (142, 146884255), (355, 58753702), (497, 41966930), (710, 29376851), (994, 20983465), (1283, 16256870), (2485, 8393386), (2566, 8128435), (3271, 6376510), (4970, 4196693), (6415, 3251374), (6542, 3188255), (8981, 2322410), (12830, 1625687), (16355, 1275302), (17962, 1161205), (22897, 910930), (32710, 637651), (44905, 464482), (45794, 455465), (89810, 232241), (91093, 228970), (114485, 182186)]