21009250

素因数分解:

$2^1\times 5^3\times {\mathrm{19}}^1\times {\mathrm{4423}}^1$

素因数の和:4459

約数の個数: 32

約数和(自身を含む): 41408640

約数和(自身を除く): 20399390

約数列:

[1, 2, 5, 10, 19, 25, 38, 50, 95, 125, 190, 250, 475, 950, 2375, 4423, 4750, 8846, 22115, 44230, 84037, 110575, 168074, 221150, 420185, 552875, 840370, 1105750, 2100925, 4201850, 10504625, 21009250]

約数ペア:

[(1, 21009250), (2, 10504625), (5, 4201850), (10, 2100925), (19, 1105750), (25, 840370), (38, 552875), (50, 420185), (95, 221150), (125, 168074), (190, 110575), (250, 84037), (475, 44230), (950, 22115), (2375, 8846), (4423, 4750)]