80725000

素因数分解:

$2^3\times 5^5\times {\mathrm{3229}}^1$

素因数の和:3260

約数の個数: 48

約数和(自身を含む): 189245700

約数和(自身を除く): 108520700

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 625, 1000, 1250, 2500, 3125, 3229, 5000, 6250, 6458, 12500, 12916, 16145, 25000, 25832, 32290, 64580, 80725, 129160, 161450, 322900, 403625, 645800, 807250, 1614500, 2018125, 3229000, 4036250, 8072500, 10090625, 16145000, 20181250, 40362500, 80725000]

約数ペア:

[(1, 80725000), (2, 40362500), (4, 20181250), (5, 16145000), (8, 10090625), (10, 8072500), (20, 4036250), (25, 3229000), (40, 2018125), (50, 1614500), (100, 807250), (125, 645800), (200, 403625), (250, 322900), (500, 161450), (625, 129160), (1000, 80725), (1250, 64580), (2500, 32290), (3125, 25832), (3229, 25000), (5000, 16145), (6250, 12916), (6458, 12500)]