144400400

素因数分解:

$2^4\times 5^2\times {\mathrm{361001}}^1$

素因数の和:361019

約数の個数: 30

約数和(自身を含む): 346922922

約数和(自身を除く): 202522522

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 361001, 722002, 1444004, 1805005, 2888008, 3610010, 5776016, 7220020, 9025025, 14440040, 18050050, 28880080, 36100100, 72200200, 144400400]

約数ペア:

[(1, 144400400), (2, 72200200), (4, 36100100), (5, 28880080), (8, 18050050), (10, 14440040), (16, 9025025), (20, 7220020), (25, 5776016), (40, 3610010), (50, 2888008), (80, 1805005), (100, 1444004), (200, 722002), (400, 361001)]