278254920

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{181}}^1\times {\mathrm{557}}^1$

素因数の和:775

約数の個数: 128

約数和(自身を含む): 877443840

約数和(自身を除く): 599188920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 23, 24, 30, 40, 46, 60, 69, 92, 115, 120, 138, 181, 184, 230, 276, 345, 362, 460, 543, 552, 557, 690, 724, 905, 920, 1086, 1114, 1380, 1448, 1671, 1810, 2172, 2228, 2715, 2760, 2785, 3342, 3620, 4163, 4344, 4456, 5430, 5570, 6684, 7240, 8326, 8355, 10860, 11140, 12489, 12811, 13368, 16652, 16710, 20815, 21720, 22280, 24978, 25622, 33304, 33420, 38433, 41630, 49956, 51244, 62445, 64055, 66840, 76866, 83260, 99912, 100817, 102488, 124890, 128110, 153732, 166520, 192165, 201634, 249780, 256220, 302451, 307464, 384330, 403268, 499560, 504085, 512440, 604902, 768660, 806536, 1008170, 1209804, 1512255, 1537320, 2016340, 2318791, 2419608, 3024510, 4032680, 4637582, 6049020, 6956373, 9275164, 11593955, 12098040, 13912746, 18550328, 23187910, 27825492, 34781865, 46375820, 55650984, 69563730, 92751640, 139127460, 278254920]

約数ペア:

[(1, 278254920), (2, 139127460), (3, 92751640), (4, 69563730), (5, 55650984), (6, 46375820), (8, 34781865), (10, 27825492), (12, 23187910), (15, 18550328), (20, 13912746), (23, 12098040), (24, 11593955), (30, 9275164), (40, 6956373), (46, 6049020), (60, 4637582), (69, 4032680), (92, 3024510), (115, 2419608), (120, 2318791), (138, 2016340), (181, 1537320), (184, 1512255), (230, 1209804), (276, 1008170), (345, 806536), (362, 768660), (460, 604902), (543, 512440), (552, 504085), (557, 499560), (690, 403268), (724, 384330), (905, 307464), (920, 302451), (1086, 256220), (1114, 249780), (1380, 201634), (1448, 192165), (1671, 166520), (1810, 153732), (2172, 128110), (2228, 124890), (2715, 102488), (2760, 100817), (2785, 99912), (3342, 83260), (3620, 76866), (4163, 66840), (4344, 64055), (4456, 62445), (5430, 51244), (5570, 49956), (6684, 41630), (7240, 38433), (8326, 33420), (8355, 33304), (10860, 25622), (11140, 24978), (12489, 22280), (12811, 21720), (13368, 20815), (16652, 16710)]