20068100

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{359}}^1$

素因数の和:429

約数の個数: 72

約数和(自身を含む): 48121920

約数和(自身を除く): 28053820

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 43, 50, 52, 65, 86, 100, 130, 172, 215, 260, 325, 359, 430, 559, 650, 718, 860, 1075, 1118, 1300, 1436, 1795, 2150, 2236, 2795, 3590, 4300, 4667, 5590, 7180, 8975, 9334, 11180, 13975, 15437, 17950, 18668, 23335, 27950, 30874, 35900, 46670, 55900, 61748, 77185, 93340, 116675, 154370, 200681, 233350, 308740, 385925, 401362, 466700, 771850, 802724, 1003405, 1543700, 2006810, 4013620, 5017025, 10034050, 20068100]

約数ペア:

[(1, 20068100), (2, 10034050), (4, 5017025), (5, 4013620), (10, 2006810), (13, 1543700), (20, 1003405), (25, 802724), (26, 771850), (43, 466700), (50, 401362), (52, 385925), (65, 308740), (86, 233350), (100, 200681), (130, 154370), (172, 116675), (215, 93340), (260, 77185), (325, 61748), (359, 55900), (430, 46670), (559, 35900), (650, 30874), (718, 27950), (860, 23335), (1075, 18668), (1118, 17950), (1300, 15437), (1436, 13975), (1795, 11180), (2150, 9334), (2236, 8975), (2795, 7180), (3590, 5590), (4300, 4667)]