20974160

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{11399}}^1$

素因数の和:11435

約数の個数: 40

約数和(自身を含む): 50889600

約数和(自身を除く): 29915440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 92, 115, 184, 230, 368, 460, 920, 1840, 11399, 22798, 45596, 56995, 91192, 113990, 182384, 227980, 262177, 455960, 524354, 911920, 1048708, 1310885, 2097416, 2621770, 4194832, 5243540, 10487080, 20974160]

約数ペア:

[(1, 20974160), (2, 10487080), (4, 5243540), (5, 4194832), (8, 2621770), (10, 2097416), (16, 1310885), (20, 1048708), (23, 911920), (40, 524354), (46, 455960), (80, 262177), (92, 227980), (115, 182384), (184, 113990), (230, 91192), (368, 56995), (460, 45596), (920, 22798), (1840, 11399)]