51989840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{263}}^1\times {\mathrm{353}}^1$

素因数の和:636

約数の個数: 80

約数和(自身を含む): 139062528

約数和(自身を除く): 87072688

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 263, 280, 353, 526, 560, 706, 1052, 1315, 1412, 1765, 1841, 2104, 2471, 2630, 2824, 3530, 3682, 4208, 4942, 5260, 5648, 7060, 7364, 9205, 9884, 10520, 12355, 14120, 14728, 18410, 19768, 21040, 24710, 28240, 29456, 36820, 39536, 49420, 73640, 92839, 98840, 147280, 185678, 197680, 371356, 464195, 649873, 742712, 928390, 1299746, 1485424, 1856780, 2599492, 3249365, 3713560, 5198984, 6498730, 7427120, 10397968, 12997460, 25994920, 51989840]

約数ペア:

[(1, 51989840), (2, 25994920), (4, 12997460), (5, 10397968), (7, 7427120), (8, 6498730), (10, 5198984), (14, 3713560), (16, 3249365), (20, 2599492), (28, 1856780), (35, 1485424), (40, 1299746), (56, 928390), (70, 742712), (80, 649873), (112, 464195), (140, 371356), (263, 197680), (280, 185678), (353, 147280), (526, 98840), (560, 92839), (706, 73640), (1052, 49420), (1315, 39536), (1412, 36820), (1765, 29456), (1841, 28240), (2104, 24710), (2471, 21040), (2630, 19768), (2824, 18410), (3530, 14728), (3682, 14120), (4208, 12355), (4942, 10520), (5260, 9884), (5648, 9205), (7060, 7364)]