81278512220

素因数分解:

$2^2\times 5^1\times {\mathrm{139333}}^1\times {\mathrm{29167}}^1$

素因数の和:168509

約数の個数: 24

約数和(自身を含む): 170691952704

約数和(自身を除く): 89413440484

約数列:

[1, 2, 4, 5, 10, 20, 29167, 58334, 116668, 139333, 145835, 278666, 291670, 557332, 583340, 696665, 1393330, 2786660, 4063925611, 8127851222, 16255702444, 20319628055, 40639256110, 81278512220]

約数ペア:

[(1, 81278512220), (2, 40639256110), (4, 20319628055), (5, 16255702444), (10, 8127851222), (20, 4063925611), (29167, 2786660), (58334, 1393330), (116668, 696665), (139333, 583340), (145835, 557332), (278666, 291670)]