257322320

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{127}}^1$

素因数の和:233

約数の個数: 160

約数和(自身を含む): 670433280

約数和(自身を除く): 413110960

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 31, 38, 40, 43, 62, 76, 80, 86, 95, 124, 127, 152, 155, 172, 190, 215, 248, 254, 304, 310, 344, 380, 430, 496, 508, 589, 620, 635, 688, 760, 817, 860, 1016, 1178, 1240, 1270, 1333, 1520, 1634, 1720, 2032, 2356, 2413, 2480, 2540, 2666, 2945, 3268, 3440, 3937, 4085, 4712, 4826, 5080, 5332, 5461, 5890, 6536, 6665, 7874, 8170, 9424, 9652, 10160, 10664, 10922, 11780, 12065, 13072, 13330, 15748, 16340, 19304, 19685, 21328, 21844, 23560, 24130, 25327, 26660, 27305, 31496, 32680, 38608, 39370, 43688, 47120, 48260, 50654, 53320, 54610, 62992, 65360, 74803, 78740, 87376, 96520, 101308, 103759, 106640, 109220, 126635, 149606, 157480, 169291, 193040, 202616, 207518, 218440, 253270, 299212, 314960, 338582, 374015, 405232, 415036, 436880, 506540, 518795, 598424, 677164, 748030, 830072, 846455, 1013080, 1037590, 1196848, 1354328, 1496060, 1660144, 1692910, 2026160, 2075180, 2708656, 2992120, 3216529, 3385820, 4150360, 5984240, 6433058, 6771640, 8300720, 12866116, 13543280, 16082645, 25732232, 32165290, 51464464, 64330580, 128661160, 257322320]

約数ペア:

[(1, 257322320), (2, 128661160), (4, 64330580), (5, 51464464), (8, 32165290), (10, 25732232), (16, 16082645), (19, 13543280), (20, 12866116), (31, 8300720), (38, 6771640), (40, 6433058), (43, 5984240), (62, 4150360), (76, 3385820), (80, 3216529), (86, 2992120), (95, 2708656), (124, 2075180), (127, 2026160), (152, 1692910), (155, 1660144), (172, 1496060), (190, 1354328), (215, 1196848), (248, 1037590), (254, 1013080), (304, 846455), (310, 830072), (344, 748030), (380, 677164), (430, 598424), (496, 518795), (508, 506540), (589, 436880), (620, 415036), (635, 405232), (688, 374015), (760, 338582), (817, 314960), (860, 299212), (1016, 253270), (1178, 218440), (1240, 207518), (1270, 202616), (1333, 193040), (1520, 169291), (1634, 157480), (1720, 149606), (2032, 126635), (2356, 109220), (2413, 106640), (2480, 103759), (2540, 101308), (2666, 96520), (2945, 87376), (3268, 78740), (3440, 74803), (3937, 65360), (4085, 62992), (4712, 54610), (4826, 53320), (5080, 50654), (5332, 48260), (5461, 47120), (5890, 43688), (6536, 39370), (6665, 38608), (7874, 32680), (8170, 31496), (9424, 27305), (9652, 26660), (10160, 25327), (10664, 24130), (10922, 23560), (11780, 21844), (12065, 21328), (13072, 19685), (13330, 19304), (15748, 16340)]