80723900

素因数分解:

$2^2\times 5^2\times {\mathrm{43}}^1\times {\mathrm{18773}}^1$

素因数の和:18830

約数の個数: 36

約数和(自身を含む): 179254152

約数和(自身を除く): 98530252

約数列:

[1, 2, 4, 5, 10, 20, 25, 43, 50, 86, 100, 172, 215, 430, 860, 1075, 2150, 4300, 18773, 37546, 75092, 93865, 187730, 375460, 469325, 807239, 938650, 1614478, 1877300, 3228956, 4036195, 8072390, 16144780, 20180975, 40361950, 80723900]

約数ペア:

[(1, 80723900), (2, 40361950), (4, 20180975), (5, 16144780), (10, 8072390), (20, 4036195), (25, 3228956), (43, 1877300), (50, 1614478), (86, 938650), (100, 807239), (172, 469325), (215, 375460), (430, 187730), (860, 93865), (1075, 75092), (2150, 37546), (4300, 18773)]