163990475

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{227}}^1$

素因数の和:356

約数の個数: 48

約数和(自身を含む): 232056576

約数和(自身を除く): 68066101

約数列:

[1, 5, 11, 25, 37, 55, 71, 185, 227, 275, 355, 407, 781, 925, 1135, 1775, 2035, 2497, 2627, 3905, 5675, 8399, 10175, 12485, 13135, 16117, 19525, 28897, 41995, 62425, 65675, 80585, 92389, 144485, 177287, 209975, 402925, 461945, 596329, 722425, 886435, 2309725, 2981645, 4432175, 6559619, 14908225, 32798095, 163990475]

約数ペア:

[(1, 163990475), (5, 32798095), (11, 14908225), (25, 6559619), (37, 4432175), (55, 2981645), (71, 2309725), (185, 886435), (227, 722425), (275, 596329), (355, 461945), (407, 402925), (781, 209975), (925, 177287), (1135, 144485), (1775, 92389), (2035, 80585), (2497, 65675), (2627, 62425), (3905, 41995), (5675, 28897), (8399, 19525), (10175, 16117), (12485, 13135)]