20118070

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{127}}^1$

素因数の和:245

約数の個数: 64

約数和(自身を含む): 43646976

約数和(自身を除く): 23528906

約数列:

[1, 2, 5, 7, 10, 14, 31, 35, 62, 70, 73, 127, 146, 155, 217, 254, 310, 365, 434, 511, 635, 730, 889, 1022, 1085, 1270, 1778, 2170, 2263, 2555, 3937, 4445, 4526, 5110, 7874, 8890, 9271, 11315, 15841, 18542, 19685, 22630, 27559, 31682, 39370, 46355, 55118, 64897, 79205, 92710, 129794, 137795, 158410, 275590, 287401, 324485, 574802, 648970, 1437005, 2011807, 2874010, 4023614, 10059035, 20118070]

約数ペア:

[(1, 20118070), (2, 10059035), (5, 4023614), (7, 2874010), (10, 2011807), (14, 1437005), (31, 648970), (35, 574802), (62, 324485), (70, 287401), (73, 275590), (127, 158410), (146, 137795), (155, 129794), (217, 92710), (254, 79205), (310, 64897), (365, 55118), (434, 46355), (511, 39370), (635, 31682), (730, 27559), (889, 22630), (1022, 19685), (1085, 18542), (1270, 15841), (1778, 11315), (2170, 9271), (2263, 8890), (2555, 7874), (3937, 5110), (4445, 4526)]