28718840

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{283}}^1$

素因数の和:396

約数の個数: 64

約数和(自身を含む): 67478400

約数和(自身を除く): 38759560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 59, 86, 118, 172, 215, 236, 283, 295, 344, 430, 472, 566, 590, 860, 1132, 1180, 1415, 1720, 2264, 2360, 2537, 2830, 5074, 5660, 10148, 11320, 12169, 12685, 16697, 20296, 24338, 25370, 33394, 48676, 50740, 60845, 66788, 83485, 97352, 101480, 121690, 133576, 166970, 243380, 333940, 486760, 667880, 717971, 1435942, 2871884, 3589855, 5743768, 7179710, 14359420, 28718840]

約数ペア:

[(1, 28718840), (2, 14359420), (4, 7179710), (5, 5743768), (8, 3589855), (10, 2871884), (20, 1435942), (40, 717971), (43, 667880), (59, 486760), (86, 333940), (118, 243380), (172, 166970), (215, 133576), (236, 121690), (283, 101480), (295, 97352), (344, 83485), (430, 66788), (472, 60845), (566, 50740), (590, 48676), (860, 33394), (1132, 25370), (1180, 24338), (1415, 20296), (1720, 16697), (2264, 12685), (2360, 12169), (2537, 11320), (2830, 10148), (5074, 5660)]