81278000

素因数分解:

$2^4\times 5^3\times {\mathrm{40639}}^1$

素因数の和:40662

約数の個数: 40

約数和(自身を含む): 196535040

約数和(自身を除く): 115257040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 1000, 2000, 40639, 81278, 162556, 203195, 325112, 406390, 650224, 812780, 1015975, 1625560, 2031950, 3251120, 4063900, 5079875, 8127800, 10159750, 16255600, 20319500, 40639000, 81278000]

約数ペア:

[(1, 81278000), (2, 40639000), (4, 20319500), (5, 16255600), (8, 10159750), (10, 8127800), (16, 5079875), (20, 4063900), (25, 3251120), (40, 2031950), (50, 1625560), (80, 1015975), (100, 812780), (125, 650224), (200, 406390), (250, 325112), (400, 203195), (500, 162556), (1000, 81278), (2000, 40639)]