40002500

素因数分解:

$2^2\times 5^4\times {\mathrm{16001}}^1$

素因数の和:16025

約数の個数: 30

約数和(自身を含む): 87482934

約数和(自身を除く): 47480434

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 250, 500, 625, 1250, 2500, 16001, 32002, 64004, 80005, 160010, 320020, 400025, 800050, 1600100, 2000125, 4000250, 8000500, 10000625, 20001250, 40002500]

約数ペア:

[(1, 40002500), (2, 20001250), (4, 10000625), (5, 8000500), (10, 4000250), (20, 2000125), (25, 1600100), (50, 800050), (100, 400025), (125, 320020), (250, 160010), (500, 80005), (625, 64004), (1250, 32002), (2500, 16001)]