251666960

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{149}}^1\times {\mathrm{491}}^1$

素因数の和:696

約数の個数: 80

約数和(自身を含む): 603979200

約数和(自身を除く): 352312240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 149, 172, 215, 298, 344, 430, 491, 596, 688, 745, 860, 982, 1192, 1490, 1720, 1964, 2384, 2455, 2980, 3440, 3928, 4910, 5960, 6407, 7856, 9820, 11920, 12814, 19640, 21113, 25628, 32035, 39280, 42226, 51256, 64070, 73159, 84452, 102512, 105565, 128140, 146318, 168904, 211130, 256280, 292636, 337808, 365795, 422260, 512560, 585272, 731590, 844520, 1170544, 1463180, 1689040, 2926360, 3145837, 5852720, 6291674, 12583348, 15729185, 25166696, 31458370, 50333392, 62916740, 125833480, 251666960]

約数ペア:

[(1, 251666960), (2, 125833480), (4, 62916740), (5, 50333392), (8, 31458370), (10, 25166696), (16, 15729185), (20, 12583348), (40, 6291674), (43, 5852720), (80, 3145837), (86, 2926360), (149, 1689040), (172, 1463180), (215, 1170544), (298, 844520), (344, 731590), (430, 585272), (491, 512560), (596, 422260), (688, 365795), (745, 337808), (860, 292636), (982, 256280), (1192, 211130), (1490, 168904), (1720, 146318), (1964, 128140), (2384, 105565), (2455, 102512), (2980, 84452), (3440, 73159), (3928, 64070), (4910, 51256), (5960, 42226), (6407, 39280), (7856, 32035), (9820, 25628), (11920, 21113), (12814, 19640)]