49978900

素因数分解:

$2^2\times 5^2\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{197}}^1$

素因数の和:313

約数の個数: 72

約数和(自身を含む): 113430240

約数和(自身を除く): 63451340

約数列:

[1, 2, 4, 5, 10, 20, 25, 43, 50, 59, 86, 100, 118, 172, 197, 215, 236, 295, 394, 430, 590, 788, 860, 985, 1075, 1180, 1475, 1970, 2150, 2537, 2950, 3940, 4300, 4925, 5074, 5900, 8471, 9850, 10148, 11623, 12685, 16942, 19700, 23246, 25370, 33884, 42355, 46492, 50740, 58115, 63425, 84710, 116230, 126850, 169420, 211775, 232460, 253700, 290575, 423550, 499789, 581150, 847100, 999578, 1162300, 1999156, 2498945, 4997890, 9995780, 12494725, 24989450, 49978900]

約数ペア:

[(1, 49978900), (2, 24989450), (4, 12494725), (5, 9995780), (10, 4997890), (20, 2498945), (25, 1999156), (43, 1162300), (50, 999578), (59, 847100), (86, 581150), (100, 499789), (118, 423550), (172, 290575), (197, 253700), (215, 232460), (236, 211775), (295, 169420), (394, 126850), (430, 116230), (590, 84710), (788, 63425), (860, 58115), (985, 50740), (1075, 46492), (1180, 42355), (1475, 33884), (1970, 25370), (2150, 23246), (2537, 19700), (2950, 16942), (3940, 12685), (4300, 11623), (4925, 10148), (5074, 9850), (5900, 8471)]