2605000

素因数分解:

$2^3\times 5^4\times {\mathrm{521}}^1$

素因数の和:547

約数の個数: 40

約数和(自身を含む): 6115230

約数和(自身を除く): 3510230

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 521, 625, 1000, 1042, 1250, 2084, 2500, 2605, 4168, 5000, 5210, 10420, 13025, 20840, 26050, 52100, 65125, 104200, 130250, 260500, 325625, 521000, 651250, 1302500, 2605000]

約数ペア:

[(1, 2605000), (2, 1302500), (4, 651250), (5, 521000), (8, 325625), (10, 260500), (20, 130250), (25, 104200), (40, 65125), (50, 52100), (100, 26050), (125, 20840), (200, 13025), (250, 10420), (500, 5210), (521, 5000), (625, 4168), (1000, 2605), (1042, 2500), (1250, 2084)]