9995780

素因数分解:

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

素因数の和:308

約数の個数: 48

約数和(自身を含む): 21954240

約数和(自身を除く): 11958460

約数列:

[1, 2, 4, 5, 10, 20, 43, 59, 86, 118, 172, 197, 215, 236, 295, 394, 430, 590, 788, 860, 985, 1180, 1970, 2537, 3940, 5074, 8471, 10148, 11623, 12685, 16942, 23246, 25370, 33884, 42355, 46492, 50740, 58115, 84710, 116230, 169420, 232460, 499789, 999578, 1999156, 2498945, 4997890, 9995780]

約数ペア:

[(1, 9995780), (2, 4997890), (4, 2498945), (5, 1999156), (10, 999578), (20, 499789), (43, 232460), (59, 169420), (86, 116230), (118, 84710), (172, 58115), (197, 50740), (215, 46492), (236, 42355), (295, 33884), (394, 25370), (430, 23246), (590, 16942), (788, 12685), (860, 11623), (985, 10148), (1180, 8471), (1970, 5074), (2537, 3940)]