200778460

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{197}}^1\times {\mathrm{389}}^1$

素因数の和:726

約数の個数: 48

約数和(自身を含む): 428107680

約数和(自身を除く): 227329220

約数列:

[1, 2, 4, 5, 10, 20, 131, 197, 262, 389, 394, 524, 655, 778, 788, 985, 1310, 1556, 1945, 1970, 2620, 3890, 3940, 7780, 25807, 50959, 51614, 76633, 101918, 103228, 129035, 153266, 203836, 254795, 258070, 306532, 383165, 509590, 516140, 766330, 1019180, 1532660, 10038923, 20077846, 40155692, 50194615, 100389230, 200778460]

約数ペア:

[(1, 200778460), (2, 100389230), (4, 50194615), (5, 40155692), (10, 20077846), (20, 10038923), (131, 1532660), (197, 1019180), (262, 766330), (389, 516140), (394, 509590), (524, 383165), (655, 306532), (778, 258070), (788, 254795), (985, 203836), (1310, 153266), (1556, 129035), (1945, 103228), (1970, 101918), (2620, 76633), (3890, 51614), (3940, 50959), (7780, 25807)]