18216920

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{19801}}^1$

素因数の和:19835

約数の個数: 32

約数和(自身を含む): 42772320

約数和(自身を除く): 24555400

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 115, 184, 230, 460, 920, 19801, 39602, 79204, 99005, 158408, 198010, 396020, 455423, 792040, 910846, 1821692, 2277115, 3643384, 4554230, 9108460, 18216920]

約数ペア:

[(1, 18216920), (2, 9108460), (4, 4554230), (5, 3643384), (8, 2277115), (10, 1821692), (20, 910846), (23, 792040), (40, 455423), (46, 396020), (92, 198010), (115, 158408), (184, 99005), (230, 79204), (460, 39602), (920, 19801)]