18317680

素因数分解:

$2^4\times 5^1\times {\mathrm{401}}^1\times {\mathrm{571}}^1$

素因数の和:985

約数の個数: 40

約数和(自身を含む): 42769584

約数和(自身を除く): 24451904

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 401, 571, 802, 1142, 1604, 2005, 2284, 2855, 3208, 4010, 4568, 5710, 6416, 8020, 9136, 11420, 16040, 22840, 32080, 45680, 228971, 457942, 915884, 1144855, 1831768, 2289710, 3663536, 4579420, 9158840, 18317680]

約数ペア:

[(1, 18317680), (2, 9158840), (4, 4579420), (5, 3663536), (8, 2289710), (10, 1831768), (16, 1144855), (20, 915884), (40, 457942), (80, 228971), (401, 45680), (571, 32080), (802, 22840), (1142, 16040), (1604, 11420), (2005, 9136), (2284, 8020), (2855, 6416), (3208, 5710), (4010, 4568)]