40001200

素因数分解:

$2^4\times 5^2\times {\mathrm{100003}}^1$

素因数の和:100021

約数の個数: 30

約数和(自身を含む): 96103844

約数和(自身を除く): 56102644

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 100003, 200006, 400012, 500015, 800024, 1000030, 1600048, 2000060, 2500075, 4000120, 5000150, 8000240, 10000300, 20000600, 40001200]

約数ペア:

[(1, 40001200), (2, 20000600), (4, 10000300), (5, 8000240), (8, 5000150), (10, 4000120), (16, 2500075), (20, 2000060), (25, 1600048), (40, 1000030), (50, 800024), (80, 500015), (100, 400012), (200, 200006), (400, 100003)]