25502500

素因数分解:

$2^2\times 5^4\times {\mathrm{101}}^2$

素因数の和:226

約数の個数: 45

約数和(自身を含む): 56326501

約数和(自身を除く): 30824001

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 101, 125, 202, 250, 404, 500, 505, 625, 1010, 1250, 2020, 2500, 2525, 5050, 10100, 10201, 12625, 20402, 25250, 40804, 50500, 51005, 63125, 102010, 126250, 204020, 252500, 255025, 510050, 1020100, 1275125, 2550250, 5100500, 6375625, 12751250, 25502500]

約数ペア:

[(1, 25502500), (2, 12751250), (4, 6375625), (5, 5100500), (10, 2550250), (20, 1275125), (25, 1020100), (50, 510050), (100, 255025), (101, 252500), (125, 204020), (202, 126250), (250, 102010), (404, 63125), (500, 51005), (505, 50500), (625, 40804), (1010, 25250), (1250, 20402), (2020, 12625), (2500, 10201), (2525, 10100)]