161978840

素因数分解:

$2^3\times 5^1\times {\mathrm{4049471}}^1$

素因数の和:4049482

約数の個数: 16

約数和(自身を含む): 364452480

約数和(自身を除く): 202473640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 4049471, 8098942, 16197884, 20247355, 32395768, 40494710, 80989420, 161978840]

約数ペア:

[(1, 161978840), (2, 80989420), (4, 40494710), (5, 32395768), (8, 20247355), (10, 16197884), (20, 8098942), (40, 4049471)]